TERMIUM Plus®
The Government of Canada’s terminology and linguistic data bank.
THRESHOLD DIFFERENCE [5 records]
Record 1 - internal organization data 2017-05-04
Record 1, English
Record 1, Subject field(s)
- Optics
Record 1, Main entry term, English
- just-noticeable colour difference
1, record 1, English, just%2Dnoticeable%20colour%20difference
correct
Record 1, Abbreviations, English
- j.n.c.d. 1, record 1, English, j%2En%2Ec%2Ed%2E
correct
Record 1, Synonyms, English
- threshold difference 2, record 1, English, threshold%20difference
correct
- limen 1, record 1, English, limen
correct
- colour difference threshold 1, record 1, English, colour%20difference%20threshold
correct
Record 1, Textual support, English
Record number: 1, Textual support number: 1 CONT
... it is usual to start with two halves of the comparison field which not only look the same but which are completely equal as regards spectral composition and luminance. Then the amount by which one of the two has to be altered to create a just visible difference in colour is determined. In the literature this just-noticeable colour difference (abbreviated to j.n.c.d. by Wright) has various names ... 1, record 1, English, - just%2Dnoticeable%20colour%20difference
Record 1, Key term(s)
- just-noticeable color difference
- color difference threshold
- jncd
Record 1, French
Record 1, Domaine(s)
- Optique
Record 1, Main entry term, French
- seuil différentiel
1, record 1, French, seuil%20diff%C3%A9rentiel
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
Plus petite différence de couleur perceptible à l'œil. [Définition normalisée par l'AFNOR.] 1, record 1, French, - seuil%20diff%C3%A9rentiel
Record number: 1, Textual support number: 1 OBS
seuil différentiel : terme normalisé par l'AFNOR. 2, record 1, French, - seuil%20diff%C3%A9rentiel
Record 1, Spanish
Record 1, Textual support, Spanish
Record 2 - internal organization data 2012-07-16
Record 2, English
Record 2, Subject field(s)
- Scientific Measurements and Analyses
- Psychology (General)
- Acoustics (Physics)
- Food Industries
Record 2, Main entry term, English
- difference threshold
1, record 2, English, difference%20threshold
correct, standardized
Record 2, Abbreviations, English
Record 2, Synonyms, English
- difference limen 2, record 2, English, difference%20limen
correct
- DL 2, record 2, English, DL
correct
- DL 2, record 2, English, DL
- just noticeable difference 2, record 2, English, just%20noticeable%20difference
correct
- JND 3, record 2, English, JND
correct
- JND 3, record 2, English, JND
- differential threshold 3, record 2, English, differential%20threshold
correct
Record 2, Textual support, English
Record number: 2, Textual support number: 1 DEF
Value of the smallest perceptible change in the physical intensity of a stimulus. 4, record 2, English, - difference%20threshold
Record number: 2, Textual support number: 1 OBS
difference threshold: term and definition standardized by ISO. 5, record 2, English, - difference%20threshold
Record 2, French
Record 2, Domaine(s)
- Mesures et analyse (Sciences)
- Psychologie (Généralités)
- Acoustique (Physique)
- Industrie de l'alimentation
Record 2, Main entry term, French
- seuil différentiel
1, record 2, French, seuil%20diff%C3%A9rentiel
correct, masculine noun, standardized
Record 2, Abbreviations, French
Record 2, Synonyms, French
Record 2, Textual support, French
Record number: 2, Textual support number: 1 DEF
Valeur de la plus petite modification perceptible dans l'intensité physique d'un stimulus. 2, record 2, French, - seuil%20diff%C3%A9rentiel
Record number: 2, Textual support number: 1 OBS
seuil différentiel : terme et définition normalisés par l'ISO et par l'AFNOR. 3, record 2, French, - seuil%20diff%C3%A9rentiel
Record 2, Spanish
Record 2, Textual support, Spanish
Record 3 - internal organization data 2011-09-09
Record 3, English
Record 3, Subject field(s)
- Acoustics (Physics)
- Hearing
Record 3, Main entry term, English
- hearing threshold difference
1, record 3, English, hearing%20threshold%20difference
correct
Record 3, Abbreviations, English
- HTD 2, record 3, English, HTD
correct
Record 3, Synonyms, English
Record 3, Textual support, English
Record 3, French
Record 3, Domaine(s)
- Acoustique (Physique)
- Ouïe
Record 3, Main entry term, French
- écart atonal
1, record 3, French, %C3%A9cart%20atonal
correct, masculine noun, standardized
Record 3, Abbreviations, French
Record 3, Synonyms, French
Record 3, Textual support, French
Record number: 3, Textual support number: 1 DEF
Pour un auditeur donné et un signal permanent de fréquence déterminée, différence entre le seuil d'audition et le seuil de perception tonale. 1, record 3, French, - %C3%A9cart%20atonal
Record number: 3, Textual support number: 1 OBS
écart tonal : terme et définition normalisés par l'AFNOR 2, record 3, French, - %C3%A9cart%20atonal
Record 3, Spanish
Record 3, Textual support, Spanish
Record 4 - internal organization data 2003-05-06
Record 4, English
Record 4, Subject field(s)
- Acoustics (Physics)
Record 4, Main entry term, English
- sound pressure level of the difference limen
1, record 4, English, sound%20pressure%20level%20of%20the%20difference%20limen
proposal
Record 4, Abbreviations, English
Record 4, Synonyms, English
- sound pressure level of the DL 1, record 4, English, sound%20pressure%20level%20of%20the%20DL
proposal
- sound pressure level of the difference threshold 1, record 4, English, sound%20pressure%20level%20of%20the%20difference%20threshold
proposal
- sound pressure level of the just-noticeable difference 1, record 4, English, sound%20pressure%20level%20of%20the%20just%2Dnoticeable%20difference
proposal
- sound pressure level of the JND 1, record 4, English, sound%20pressure%20level%20of%20the%20JND
proposal
Record 4, Textual support, English
Record number: 4, Textual support number: 1 OBS
difference limen (DL): The smallest detectable change in a stimulus. Also called the just-noticeable difference or the difference threshold. 2, record 4, English, - sound%20pressure%20level%20of%20the%20difference%20limen
Record number: 4, Textual support number: 2 OBS
sound pressure level: The level of a sound in decibels relative to an internationally defined reference level. 2, record 4, English, - sound%20pressure%20level%20of%20the%20difference%20limen
Record 4, French
Record 4, Domaine(s)
- Acoustique (Physique)
Record 4, Main entry term, French
- seuil différentiel de niveau de pression acoustique
1, record 4, French, seuil%20diff%C3%A9rentiel%20de%20niveau%20de%20pression%20acoustique
correct, masculine noun, standardized
Record 4, Abbreviations, French
Record 4, Synonyms, French
Record 4, Textual support, French
Record number: 4, Textual support number: 1 DEF
Pour un auditeur donné et un son pur de fréquence déterminée, dans des conditions de mesure spécifiées, variation minimale du niveau de pression acoustique provoquant une modification de la sonie. 1, record 4, French, - seuil%20diff%C3%A9rentiel%20de%20niveau%20de%20pression%20acoustique
Record number: 4, Textual support number: 1 OBS
Terme et définition normalisés par l'AFNOR et reproduits avec son autorisation. 2, record 4, French, - seuil%20diff%C3%A9rentiel%20de%20niveau%20de%20pression%20acoustique
Record 4, Spanish
Record 4, Textual support, Spanish
Record 5 - internal organization data 1985-10-01
Record 5, English
Record 5, Subject field(s)
- Optics
- The Eye
Record 5, Main entry term, English
- luminance difference threshold
1, record 5, English, luminance%20difference%20threshold
correct
Record 5, Abbreviations, English
Record 5, Synonyms, English
Record 5, Textual support, English
Record number: 5, Textual support number: 1 DEF
Smallest difference of luminance perceptible. 1, record 5, English, - luminance%20difference%20threshold
Record 5, French
Record 5, Domaine(s)
- Optique
- Oeil
Record 5, Main entry term, French
- seuil différentiel de luminance
1, record 5, French, seuil%20diff%C3%A9rentiel%20de%20luminance
correct, masculine noun
Record 5, Abbreviations, French
Record 5, Synonyms, French
Record 5, Textual support, French
Record number: 5, Textual support number: 1 DEF
Plus petite différence de luminance perceptible. 1, record 5, French, - seuil%20diff%C3%A9rentiel%20de%20luminance
Record 5, Spanish
Record 5, 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: