TERMIUM Plus®
The Government of Canada’s terminology and linguistic data bank.
RA0 [1 record]
Record 1 - internal organization data 2023-05-16
Record 1, English
Record 1, Subject field(s)
- Scientific Measurements and Analyses
- Orthoses
- Prostheses
- The Eye
Universal entry(ies) Record 1
Record 1, Main entry term, English
- front central optic zone radius
1, record 1, English, front%20central%20optic%20zone%20radius
correct, standardized
Record 1, Abbreviations, English
Record 1, Synonyms, English
Record 1, Textual support, English
Record number: 1, Textual support number: 1 DEF
The radius of curvature of the front central optic zone of a multifocal contact lens. 1, record 1, English, - front%20central%20optic%20zone%20radius
Record number: 1, Textual support number: 1 OBS
Glasses and contact lenses are considered to be either visual orthotic devices or visual prosthetic devices. 2, record 1, English, - front%20central%20optic%20zone%20radius
Record number: 1, Textual support number: 2 OBS
In the symbol, the letter "r" is italicized, and the letter and number "a0" are written in subscript (ra0). 3, record 1, English, - front%20central%20optic%20zone%20radius
Record number: 1, Textual support number: 3 OBS
front central optic zone radius: term and definition standardized by the International Organization for Standardization (ISO). 3, record 1, English, - front%20central%20optic%20zone%20radius
Record 1, French
Record 1, Domaine(s)
- Mesures et analyse (Sciences)
- Orthèses
- Prothèses
- Oeil
Entrée(s) universelle(s) Record 1
Record 1, Main entry term, French
- rayon de la zone optique centrale antérieure
1, record 1, French, rayon%20de%20la%20zone%20optique%20centrale%20ant%C3%A9rieure
correct, masculine noun, standardized
Record 1, Abbreviations, French
Record 1, Synonyms, French
Record 1, Textual support, French
Record number: 1, Textual support number: 1 DEF
Rayon de courbure de la zone optique centrale antérieure d'une lentille de contact multifocale. 1, record 1, French, - rayon%20de%20la%20zone%20optique%20centrale%20ant%C3%A9rieure
Record number: 1, Textual support number: 1 OBS
Les lunettes et les lentilles de contact sont considérées comme étant soit des orthèses visuelles, soit des prothèses visuelles. 2, record 1, French, - rayon%20de%20la%20zone%20optique%20centrale%20ant%C3%A9rieure
Record number: 1, Textual support number: 2 OBS
Dans le symbole, la lettre «r» s'écrit en italique, et les lettre et chiffre «a0» s'écrivent en indice (ra0). 3, record 1, French, - rayon%20de%20la%20zone%20optique%20centrale%20ant%C3%A9rieure
Record number: 1, Textual support number: 3 OBS
rayon de la zone optique centrale antérieure : terme et définition normalisés par l'Organisation internationale de normalisation (ISO). 3, record 1, French, - rayon%20de%20la%20zone%20optique%20centrale%20ant%C3%A9rieure
Record 1, Spanish
Record 1, 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: