TERMIUM Plus®
The Government of Canada’s terminology and linguistic data bank.
OPTICAL ABERRATION [14 records]
Record 1 - internal organization data 2021-07-29
Record 1, English
Record 1, Subject field(s)
- Optics
- Computer Graphics
- Artificial Intelligence
Record 1, Main entry term, English
- Gaussian image
1, record 1, English, Gaussian%20image
correct
Record 1, Abbreviations, English
Record 1, Synonyms, English
- Gaussian image point 2, record 1, English, Gaussian%20image%20point
correct
Record 1, Textual support, English
Record number: 1, Textual support number: 1 DEF
The point in an optical system with spherical aberration at which the paraxial rays meet. 2, record 1, English, - Gaussian%20image
Record 1, French
Record 1, Domaine(s)
- Optique
- Infographie
- Intelligence artificielle
Record 1, Main entry term, French
- image gaussienne
1, record 1, French, image%20gaussienne
correct
Record 1, Abbreviations, French
Record 1, Synonyms, French
Record 1, Textual support, French
Record 1, Spanish
Record 1, Textual support, Spanish
Record 2 - internal organization data 2017-05-04
Record 2, English
Record 2, Subject field(s)
- Optics
Record 2, Main entry term, English
- lateral chromatic aberration
1, record 2, English, lateral%20chromatic%20aberration
correct
Record 2, Abbreviations, English
Record 2, Synonyms, English
- transverse chromatic aberration 2, record 2, English, transverse%20chromatic%20aberration
correct
- TCA 2, record 2, English, TCA
correct
- TCA 2, record 2, English, TCA
Record 2, Textual support, English
Record number: 2, Textual support number: 1 DEF
Chromatic aberration, manifested as a change in size of the image of a point formed by a lens or an optical system, due to differences of incident wavelengths. 3, record 2, English, - lateral%20chromatic%20aberration
Record 2, French
Record 2, Domaine(s)
- Optique
Record 2, Main entry term, French
- aberration chromatique transversale
1, record 2, French, aberration%20chromatique%20transversale
correct, feminine noun
Record 2, Abbreviations, French
- ACT 1, record 2, French, ACT
correct, feminine noun
Record 2, Synonyms, French
- aberration chromatique de grandissement 1, record 2, French, aberration%20chromatique%20de%20grandissement
feminine noun
- aberration chromatique par grandissement 1, record 2, French, aberration%20chromatique%20par%20grandissement
feminine noun
Record 2, Textual support, French
Record number: 2, Textual support number: 1 DEF
Défaut dans la formation de l'image d'un point objet par un système optique (œil, lentille, prisme) caractérisé par la présence d'une frange colorée autour de l'image. 1, record 2, French, - aberration%20chromatique%20transversale
Record number: 2, Textual support number: 1 OBS
Ce grandissement du point image est dû à la réfraction inégale des radiations de longueurs d'onde différentes (dispersion des matériaux réfringents). 1, record 2, French, - aberration%20chromatique%20transversale
Record number: 2, Textual support number: 2 OBS
Source MVISI-F : Le nouveau dictionnaire de la vision par Michel Millodot, Médiacom Vision Éditeur, 1997. 2, record 2, French, - aberration%20chromatique%20transversale
Record 2, Spanish
Record 2, Textual support, Spanish
Record 3 - internal organization data 2014-02-28
Record 3, English
Record 3, Subject field(s)
- The Eye
Record 3, Main entry term, English
- high order optical aberration
1, record 3, English, high%20order%20optical%20aberration
correct
Record 3, Abbreviations, English
Record 3, Synonyms, English
- high order aberration 2, record 3, English, high%20order%20aberration
correct
- HOA 3, record 3, English, HOA
correct
- HOA 3, record 3, English, HOA
- higher order optical aberration 4, record 3, English, higher%20order%20optical%20aberration
correct
- higher-order aberration 5, record 3, English, higher%2Dorder%20aberration
correct
- HOA 5, record 3, English, HOA
correct
- HOA 5, record 3, English, HOA
Record 3, Textual support, English
Record number: 3, Textual support number: 1 CONT
There are numerous higher-order aberrations, of which only spherical aberration, coma and trefoil are of clinical interest. 5, record 3, English, - high%20order%20optical%20aberration
Record 3, French
Record 3, Domaine(s)
- Oeil
Record 3, Main entry term, French
- aberration optique de haut degré
1, record 3, French, aberration%20optique%20de%20haut%20degr%C3%A9
correct, feminine noun
Record 3, Abbreviations, French
Record 3, Synonyms, French
- aberration de haut degré 2, record 3, French, aberration%20de%20haut%20degr%C3%A9
correct, feminine noun
- AHD 1, record 3, French, AHD
correct, feminine noun
- AHD 1, record 3, French, AHD
Record 3, Textual support, French
Record number: 3, Textual support number: 1 CONT
[...] aberrations de haut degré (coma, trefoil, défaut d'alignement, de sphéricité périphérique et autres imperfections optiques). 3, record 3, French, - aberration%20optique%20de%20haut%20degr%C3%A9
Record 3, Spanish
Record 3, Textual support, Spanish
Record 4 - internal organization data 2014-02-28
Record 4, English
Record 4, Subject field(s)
- Optics
- Photography
Record 4, Main entry term, English
- aberration
1, record 4, English, aberration
correct
Record 4, Abbreviations, English
Record 4, Synonyms, English
- optical aberration 2, record 4, English, optical%20aberration
correct
Record 4, Textual support, English
Record number: 4, Textual support number: 1 DEF
An optical defect in which the rays from a point object do not form a perfect point after passing through an optical system. 3, record 4, English, - aberration
Record 4, French
Record 4, Domaine(s)
- Optique
- Photographie
Record 4, Main entry term, French
- aberration
1, record 4, French, aberration
correct, feminine noun
Record 4, Abbreviations, French
Record 4, Synonyms, French
- aberration optique 2, record 4, French, aberration%20optique
correct, feminine noun
Record 4, Textual support, French
Record number: 4, Textual support number: 1 DEF
Défaut dans la formation des images par un système optique, les rayons lumineux issus d'un point objet ne formant pas un point image parfait. 3, record 4, French, - aberration
Record number: 4, Textual support number: 1 OBS
aberration : terme et définition tirés de la source Le nouveau dictionnaire de la vision par Michel Millodot, Médiacom Vision Éditeur, 1997. 4, record 4, French, - aberration
Record 4, Spanish
Record 4, Campo(s) temático(s)
- Óptica
- Fotografía
Record 4, Main entry term, Spanish
- aberración
1, record 4, Spanish, aberraci%C3%B3n
correct, feminine noun
Record 4, Abbreviations, Spanish
Record 4, Synonyms, Spanish
Record 4, Textual support, Spanish
Record number: 4, Textual support number: 1 DEF
Defecto óptico debido al cual los rayos procedentes de un punto no forman una imagen perfecta de ese punto al atravesar un sistema óptico. 1, record 4, Spanish, - aberraci%C3%B3n
Record 5 - internal organization data 2014-02-28
Record 5, English
Record 5, Subject field(s)
- The Eye
Record 5, Main entry term, English
- low order optical aberration
1, record 5, English, low%20order%20optical%20aberration
correct
Record 5, Abbreviations, English
Record 5, Synonyms, English
- low-order aberration 2, record 5, English, low%2Dorder%20aberration
correct
- LOA 3, record 5, English, LOA
correct
- LOA 3, record 5, English, LOA
- lower order aberration 4, record 5, English, lower%20order%20aberration
correct
- LOA 4, record 5, English, LOA
correct
- LOA 4, record 5, English, LOA
- lower order optical aberration 5, record 5, English, lower%20order%20optical%20aberration
correct
Record 5, Textual support, English
Record number: 5, Textual support number: 1 CONT
Low-order aberrations (LOA) are the dominant source of ocular aberrations (90%) which include: farsightedness, nearsightedness and astigmatism (orthogonal and tilt astigmatism). 6, record 5, English, - low%20order%20optical%20aberration
Record 5, French
Record 5, Domaine(s)
- Oeil
Record 5, Main entry term, French
- aberration optique de bas degré
1, record 5, French, aberration%20optique%20de%20bas%20degr%C3%A9
correct, feminine noun
Record 5, Abbreviations, French
Record 5, Synonyms, French
- aberration de bas degré 2, record 5, French, aberration%20de%20bas%20degr%C3%A9
correct, feminine noun
Record 5, Textual support, French
Record number: 5, Textual support number: 1 CONT
Les aberrations optiques responsables de la déformation du front d’onde peuvent être séparées en aberrations de bas degré [...] et de haut degré. Les aberrations optiques de bas degré [...] sont les seules à être corrigibles de façon conventionnelle par des lunettes ou des lentilles afin de restituer une bonne acuité visuelle non corrigée [...] 1, record 5, French, - aberration%20optique%20de%20bas%20degr%C3%A9
Record number: 5, Textual support number: 1 OBS
La myopie, l'hypermétropie et l'astigmatisme sont des aberrations de bas degré. 3, record 5, French, - aberration%20optique%20de%20bas%20degr%C3%A9
Record 5, Spanish
Record 5, Textual support, Spanish
Record 6 - internal organization data 2012-04-23
Record 6, English
Record 6, Subject field(s)
- Optics
Record 6, Main entry term, English
- longitudinal spherical aberration
1, record 6, English, longitudinal%20spherical%20aberration
correct
Record 6, Abbreviations, English
- LSA 1, record 6, English, LSA
correct
Record 6, Synonyms, English
Record 6, Textual support, English
Record number: 6, Textual support number: 1 CONT
... The distance along the optical axis between the intercept of the rays that are nearly on the optical axis(paraxial rays) and the rays that go through the edge of the lens(marginal rays) is called longitudinal spherical aberration(LSA). The height at which these rays intercept the paraxial focal plane is called transverse spherical aberration(TSA). 1, record 6, English, - longitudinal%20spherical%20aberration
Record 6, French
Record 6, Domaine(s)
- Optique
Record 6, Main entry term, French
- aberration sphérique longitudinale
1, record 6, French, aberration%20sph%C3%A9rique%20longitudinale
correct, feminine noun
Record 6, Abbreviations, French
- LSA 2, record 6, French, LSA
correct, feminine noun
Record 6, Synonyms, French
- aberration longitudinale de sphéricité 3, record 6, French, aberration%20longitudinale%20de%20sph%C3%A9ricit%C3%A9
correct, feminine noun
Record 6, Textual support, French
Record number: 6, Textual support number: 1 CONT
Aberration de sphéricité : pour un objet rejeté à l'infini, on observe une focalisation autour du foyer. L'extension de l'image selon l'axe optique est l'aberration sphérique longitudinale et dans le plan focal image l'aberration sphérique transversale. 4, record 6, French, - aberration%20sph%C3%A9rique%20longitudinale
Record 6, Spanish
Record 6, Campo(s) temático(s)
- Óptica
Record 6, Main entry term, Spanish
- aberración esférica longitudinal
1, record 6, Spanish, aberraci%C3%B3n%20esf%C3%A9rica%20longitudinal
correct, feminine noun
Record 6, Abbreviations, Spanish
Record 6, Synonyms, Spanish
Record 6, Textual support, Spanish
Record number: 6, Textual support number: 1 DEF
Distancia en dioptrías entre el foco de los rayos paraaxiales y los rayos paraaxiales. 1, record 6, Spanish, - aberraci%C3%B3n%20esf%C3%A9rica%20longitudinal
Record 7 - internal organization data 2012-04-13
Record 7, English
Record 7, Subject field(s)
- Optics
Record 7, Main entry term, English
- spherical aberration
1, record 7, English, spherical%20aberration
correct
Record 7, Abbreviations, English
Record 7, Synonyms, English
Record 7, Textual support, English
Record number: 7, Textual support number: 1 DEF
The aberration resulting from the fact that rays which are initially at different distances from the optical axis come to a focus at different distances along the axis when they are reflected from a spherical mirror or refracted by a lens with spherical surfaces. 2, record 7, English, - spherical%20aberration
Record 7, French
Record 7, Domaine(s)
- Optique
Record 7, Main entry term, French
- aberration sphérique
1, record 7, French, aberration%20sph%C3%A9rique
correct, feminine noun
Record 7, Abbreviations, French
Record 7, Synonyms, French
- aberration de sphéricité 2, record 7, French, aberration%20de%20sph%C3%A9ricit%C3%A9
correct, feminine noun
Record 7, Textual support, French
Record number: 7, Textual support number: 1 DEF
Défaut d'un système optique dû à une variation de la focalisation des rayons incidents parallèles à l'axe optique, selon qu'ils se trouvent ou non situés dans l'espace paraxial. 3, record 7, French, - aberration%20sph%C3%A9rique
Record 7, Spanish
Record 7, Campo(s) temático(s)
- Óptica
Record 7, Main entry term, Spanish
- aberración esférica
1, record 7, Spanish, aberraci%C3%B3n%20esf%C3%A9rica
correct, feminine noun
Record 7, Abbreviations, Spanish
Record 7, Synonyms, Spanish
Record 7, Textual support, Spanish
Record number: 7, Textual support number: 1 DEF
Exceso de refracción de la parte periférica de una lente convexa lo que produce un foco imperfecto y una imagen confusa. 1, record 7, Spanish, - aberraci%C3%B3n%20esf%C3%A9rica
Record 8 - internal organization data 2011-07-13
Record 8, English
Record 8, Subject field(s)
- Optics
Record 8, Main entry term, English
- achromatism
1, record 8, English, achromatism
correct
Record 8, Abbreviations, English
Record 8, Synonyms, English
Record 8, Textual support, English
Record number: 8, Textual support number: 1 DEF
The quality or condition of a lens or an optical system corrected for chromatic aberration. 2, record 8, English, - achromatism
Record 8, French
Record 8, Domaine(s)
- Optique
Record 8, Main entry term, French
- achromatisme
1, record 8, French, achromatisme
correct, masculine noun
Record 8, Abbreviations, French
Record 8, Synonyms, French
Record 8, Textual support, French
Record number: 8, Textual support number: 1 DEF
État d'une lentille ou d'un système optique corrigé de l'aberration chromatique ou qui n'en est pas entaché. 2, record 8, French, - achromatisme
Record 8, Spanish
Record 8, Campo(s) temático(s)
- Óptica
Record 8, Main entry term, Spanish
- acromatismo
1, record 8, Spanish, acromatismo
correct, masculine noun
Record 8, Abbreviations, Spanish
Record 8, Synonyms, Spanish
Record 8, Textual support, Spanish
Record 9 - internal organization data 2005-03-15
Record 9, English
Record 9, Subject field(s)
- Medical Instruments and Devices
- Optics
- Eye Surgery
Record 9, Main entry term, English
- aberrometer
1, record 9, English, aberrometer
correct
Record 9, Abbreviations, English
Record 9, Synonyms, English
Record 9, Textual support, English
Record number: 9, Textual support number: 1 DEF
An instrument for measuring optical aberration or any error in experimentation. 2, record 9, English, - aberrometer
Record number: 9, Textual support number: 1 CONT
The Complete Ophthalmic Analysis System (COAS) is a Shack-Hartmann-based wavefront aberrometer. Currently used around the world in leading research institutions as well as for customized ablation procedures, [the] COAS provides the highest resolution wavefront measurement available. 3, record 9, English, - aberrometer
Record 9, French
Record 9, Domaine(s)
- Instruments et appareillages médicaux
- Optique
- Chirurgie de l'œil
Record 9, Main entry term, French
- aberromètre
1, record 9, French, aberrom%C3%A8tre
correct, masculine noun
Record 9, Abbreviations, French
Record 9, Synonyms, French
Record 9, Textual support, French
Record number: 9, Textual support number: 1 DEF
Analyseur de fronts d'onde qui utilise les principes de l'optique adaptative pour mesurer et traiter les aberrations optiques de degré supérieur. 2, record 9, French, - aberrom%C3%A8tre
Record number: 9, Textual support number: 1 CONT
Les profils d'ablation personnalisés guidés par l'aberrométrie sont établis à partir du recueil et de l'analyse du front d'ondes par un aberromètre (de type Shack-Hartmann pour la plupart des systèmes) afin de mesurer et de traiter les aberrations optiques de degré supérieur. 1, record 9, French, - aberrom%C3%A8tre
Record 9, Spanish
Record 9, Textual support, Spanish
Record 10 - internal organization data 2004-04-05
Record 10, English
Record 10, Subject field(s)
- Optics
- Mathematics
Record 10, Main entry term, English
- caustic
1, record 10, English, caustic
correct, noun
Record 10, Abbreviations, English
Record 10, Synonyms, English
Record 10, Textual support, English
Record number: 10, Textual support number: 1 DEF
A curve or surface which is tangent to the rays of an initially parallel beam after reflection or refraction in an optical system. 2, record 10, English, - caustic
Record number: 10, Textual support number: 1 CONT
Neighbouring rays emanating from the same object point and passing through an optical system will not pass through the same image point but, owing to aberration, will intersect at different points. The totality of these point images lies on a surface known as a caustic. 3, record 10, English, - caustic
Record 10, French
Record 10, Domaine(s)
- Optique
- Mathématiques
Record 10, Main entry term, French
- caustique
1, record 10, French, caustique
correct, feminine noun
Record 10, Abbreviations, French
Record 10, Synonyms, French
Record 10, Textual support, French
Record number: 10, Textual support number: 1 DEF
Lieu d'intersections des rayons réfléchis (catacaustique) ou réfractés (diacaustique). La caustique est une surface tangente aux rayons d'un faisceau issu d'un même point-source et ayant traversé (ou ayant été réfléchis par) un instrument d'optique (miroir, etc.) imparfait. 2, record 10, French, - caustique
Record number: 10, Textual support number: 1 PHR
Ligne, surface, courbe caustique. 3, record 10, French, - caustique
Record 10, Spanish
Record 10, Textual support, Spanish
Record 11 - internal organization data 2004-02-05
Record 11, English
Record 11, Subject field(s)
- Optics
Record 11, Main entry term, English
- transverse spherical aberration
1, record 11, English, transverse%20spherical%20aberration
correct
Record 11, Abbreviations, English
- TSA 1, record 11, English, TSA
correct
Record 11, Synonyms, English
- lateral spherical aberration 2, record 11, English, lateral%20spherical%20aberration
Record 11, Textual support, English
Record number: 11, Textual support number: 1 CONT
... The distance along the optical axis between the intercept of the rays that are nearly on the optical axis(paraxial rays) and the rays that go through the edge of the lens(marginal rays) is called longitudinal spherical aberration(LSA). The height at which these rays intercept the paraxial focal plane is called transverse spherical aberration(TSA). 1, record 11, English, - transverse%20spherical%20aberration
Record 11, French
Record 11, Domaine(s)
- Optique
Record 11, Main entry term, French
- aberration sphérique transversale
1, record 11, French, aberration%20sph%C3%A9rique%20transversale
correct, feminine noun
Record 11, Abbreviations, French
Record 11, Synonyms, French
- aberration sphérique transverse 2, record 11, French, aberration%20sph%C3%A9rique%20transverse
correct, feminine noun
- aberration transversale de sphéricité 3, record 11, French, aberration%20transversale%20de%20sph%C3%A9ricit%C3%A9
correct, feminine noun
- aberration sphérique latérale 4, record 11, French, aberration%20sph%C3%A9rique%20lat%C3%A9rale
Record 11, Textual support, French
Record number: 11, Textual support number: 1 CONT
Aberration de sphéricité : pour un objet rejeté à l'infini, on observe une focalisation autour du foyer. L'extension de l'image selon l'axe optique est l'aberration sphérique longitudinale et dans le plan focal image l'aberration sphérique transversale. 5, record 11, French, - aberration%20sph%C3%A9rique%20transversale
Record 11, Spanish
Record 11, Textual support, Spanish
Record 12 - internal organization data 2003-11-13
Record 12, English
Record 12, Subject field(s)
- Optics
- Photography
Record 12, Main entry term, English
- achromatize
1, record 12, English, achromatize
correct, verb
Record 12, Abbreviations, English
Record 12, Synonyms, English
Record 12, Textual support, English
Record number: 12, Textual support number: 1 DEF
To correct the chromatic aberration of an optical system mostly by associating the lenses of different powers. 2, record 12, English, - achromatize
Record 12, Key term(s)
- achromatise
Record 12, French
Record 12, Domaine(s)
- Optique
- Photographie
Record 12, Main entry term, French
- achromatiser
1, record 12, French, achromatiser
correct
Record 12, Abbreviations, French
Record 12, Synonyms, French
Record 12, Textual support, French
Record number: 12, Textual support number: 1 DEF
Remédier à l'aberration chromatique, d'un système optique par exemple, le plus souvent en associant des lentilles de pouvoirs [...] différents. 1, record 12, French, - achromatiser
Record 12, Spanish
Record 12, Textual support, Spanish
Record 13 - internal organization data 1998-05-25
Record 13, English
Record 13, Subject field(s)
- Optics
Record 13, Main entry term, English
- diaphragm
1, record 13, English, diaphragm
correct, standardized
Record 13, Abbreviations, English
Record 13, Synonyms, English
Record 13, Textual support, English
Record number: 13, Textual support number: 1 DEF
Any opening in an optical system which controls the cross section of a beam of light passing through it, to control light intensity, reduce aberration, or increase depth of focus. 2, record 13, English, - diaphragm
Record number: 13, Textual support number: 1 OBS
diaphragm: Term standardized by CGSB. 3, record 13, English, - diaphragm
Record 13, French
Record 13, Domaine(s)
- Optique
Record 13, Main entry term, French
- diaphragme
1, record 13, French, diaphragme
correct, masculine noun
Record 13, Abbreviations, French
Record 13, Synonyms, French
- membrane 2, record 13, French, membrane
feminine noun
Record 13, Textual support, French
Record number: 13, Textual support number: 1 DEF
Écran percé d'une ouverture généralement circulaire, de diamètre variable, utilisé pour délimiter la largeur de champ d'une lentille ou d'un système optique, ou pour limiter la dispersion d'un faisceau lumineux. 3, record 13, French, - diaphragme
Record number: 13, Textual support number: 1 OBS
Source MVISI-F : Le nouveau dictionnaire de la vision par Michel Millodot, Médiacom Vision Éditeur, 1997. 4, record 13, French, - diaphragme
Record 13, Spanish
Record 13, Textual support, Spanish
Record 14 - internal organization data 1987-03-12
Record 14, English
Record 14, Subject field(s)
- Optics
Record 14, Main entry term, English
- achromatic lens
1, record 14, English, achromatic%20lens
correct
Record 14, Abbreviations, English
Record 14, Synonyms, English
- achromatic doublet 1, record 14, English, achromatic%20doublet
correct
Record 14, Textual support, English
Record number: 14, Textual support number: 1 DEF
A two-element lens-a doublet-that greatly reduces chromatic aberration in an optical system. The components, one positive, one negative, are of different types of glasses(i. e. they have different refractive indices) ;... 1, record 14, English, - achromatic%20lens
Record 14, French
Record 14, Domaine(s)
- Optique
Record 14, Main entry term, French
- doublet achromatique
1, record 14, French, doublet%20achromatique
correct, masculine noun
Record 14, Abbreviations, French
Record 14, Synonyms, French
Record 14, Textual support, French
Record number: 14, Textual support number: 1 CONT
On peut compenser en partie cette aberration chromatique dans un système qui associe deux lentilles, convergente et divergente, faites de verres dont les pouvoirs dispersifs respectifs sont différents; c'est le doublet achromatique (...) 1, record 14, French, - doublet%20achromatique
Record 14, Spanish
Record 14, Textual support, Spanish
Copyright notice for the TERMIUM Plus® data bank
© Public Services and Procurement Canada, 2025
TERMIUM Plus®, the Government of Canada's terminology and linguistic data bank
A product of the Translation Bureau
Features
Language Portal of Canada

Access a collection of Canadian resources on all aspects of English and French, including quizzes.
Writing tools

The Language Portal’s writing tools have a new look! Easy to consult, they give you access to a wealth of information that will help you write better in English and French.
Glossaries and vocabularies

Access Translation Bureau glossaries and vocabularies.
- Date Modified: