TERMIUM Plus®
The Government of Canada’s terminology and linguistic data bank.
D.L 50 [1 record]
Record 1 - internal organization data 2011-05-24
Record 1, English
Record 1, Subject field(s)
- Toxicology
- Environmental Studies and Analyses
- Crop Protection
Record 1, Main entry term, English
- lethal dose 50
1, record 1, English, lethal%20dose%2050
correct
Record 1, Abbreviations, English
- LD50 2, record 1, English, LD50
correct, see observation
Record 1, Synonyms, English
- mean lethal dose 3, record 1, English, mean%20lethal%20dose
correct, NATO, standardized
- LD 50 3, record 1, English, LD%2050
see observation
- LD 50 3, record 1, English, LD%2050
- lethal dose 50% 4, record 1, English, lethal%20dose%2050%25
correct
- lethal dose fifty 5, record 1, English, lethal%20dose%20fifty
correct, less frequent
- median lethal dose 6, record 1, English, median%20lethal%20dose
correct
- median lethal value 7, record 1, English, median%20lethal%20value
Record 1, Textual support, English
Record number: 1, Textual support number: 1 DEF
The dose of a substance that causes the death of 50% of an animal population from exposure to the substance by any route other than inhalation when given all in one dose. 4, record 1, English, - lethal%20dose%2050
Record number: 1, Textual support number: 1 OBS
LD50, when not separated by a space, or LD 50. 8, record 1, English, - lethal%20dose%2050
Record number: 1, Textual support number: 2 OBS
LD50 is usually expressed as milligrams or grams of material per kilogram of animal weight. 4, record 1, English, - lethal%20dose%2050
Record number: 1, Textual support number: 3 OBS
mean lethal dose: term standardized by NATO. 9, record 1, English, - lethal%20dose%2050
Record 1, French
Record 1, Domaine(s)
- Toxicologie
- Études et analyses environnementales
- Protection des végétaux
Record 1, Main entry term, French
- dose létale 50
1, record 1, French, dose%20l%C3%A9tale%2050
correct, feminine noun
Record 1, Abbreviations, French
- DL50 2, record 1, French, DL50
correct, see observation
- DL 50 3, record 1, French, DL%2050
correct
- D.L. 50 4, record 1, French, D%2EL%2E%2050
correct
Record 1, Synonyms, French
- dose létale 50 pour 100 5, record 1, French, dose%20l%C3%A9tale%2050%20pour%20100
correct, feminine noun
- dose létale 50 % 6, record 1, French, dose%20l%C3%A9tale%2050%20%25
correct, feminine noun
- dose létale à 50 % 7, record 1, French, dose%20l%C3%A9tale%20%C3%A0%2050%20%25
correct, feminine noun
- dose létale médiane 8, record 1, French, dose%20l%C3%A9tale%20m%C3%A9diane
correct, see observation, feminine noun
- dose létale moyenne 9, record 1, French, dose%20l%C3%A9tale%20moyenne
see observation, feminine noun, NATO, standardized
Record 1, Textual support, French
Record number: 1, Textual support number: 1 DEF
Dans un test biologique, quantité d’une substance qui entraîne la mort de la moitié des animaux à qui elle a été administrée d’un seul coup. 1, record 1, French, - dose%20l%C3%A9tale%2050
Record number: 1, Textual support number: 1 OBS
[Cette dose] peut être établie pour différentes voies d’exposition, sauf l'inhalation. Les plus courantes sont la voie cutanée et la voie orale. Plus la valeur de la DL50</sub> est faible, plus la substance est toxique. 1, record 1, French, - dose%20l%C3%A9tale%2050
Record number: 1, Textual support number: 2 OBS
Lorsque le chiffre 50 est placé immédiatement après l'abréviation «DL», sans espace, il figure la plupart du temps en indice. L'adjectif «létal», quoiqu'en dise le Grand Robert, est très rarement orthographié «léthal». 10, record 1, French, - dose%20l%C3%A9tale%2050
Record number: 1, Textual support number: 3 OBS
Selon le «Dictionnaire français de médecine et de biologie», de A. Manuila, le terme «dose létale moyenne» est à déconseiller et il faut lui préférer «dose létale médiane» ou «dose létale 50 %». 10, record 1, French, - dose%20l%C3%A9tale%2050
Record number: 1, Textual support number: 4 OBS
Ne pas confondre avec «tolérance moyenne» (en anglais : «median tolerance limit»). 10, record 1, French, - dose%20l%C3%A9tale%2050
Record 1, Key term(s)
- dose léthale 50
- dose léthale moyenne
Record 1, Spanish
Record 1, Campo(s) temático(s)
- Toxicología
- Estudios y análisis del medio ambiente
- Protección de las plantas
Record 1, Main entry term, Spanish
- dosis letal mediana
1, record 1, Spanish, dosis%20letal%20mediana
correct, feminine noun
Record 1, Abbreviations, Spanish
Record 1, Synonyms, Spanish
- dosis letal media 2, record 1, Spanish, dosis%20letal%20media
correct, feminine noun
- DL50 2, record 1, Spanish, DL50
correct, feminine noun
- DL50 2, record 1, Spanish, DL50
- dosis letal 50 3, record 1, Spanish, dosis%20letal%2050
correct, feminine noun
- DL50 3, record 1, Spanish, DL50
correct, feminine noun
- DL 50 4, record 1, Spanish, DL%2050
correct, feminine noun
- dosis letal 50 % 5, record 1, Spanish, dosis%20letal%2050%20%25
correct, feminine noun
- LD 50 5, record 1, Spanish, LD%2050
correct, feminine noun
Record 1, Textual support, Spanish
Record number: 1, Textual support number: 1 DEF
Dosis,calculada estadísticamente, de un agente químico o físico [...] que se espera que mate al 50% de los organismos de una población bajo un conjunto de condiciones definidas. 2, record 1, Spanish, - dosis%20letal%20mediana
Record number: 1, Textual support number: 1 CONT
Los resultados se analizaron por el método [...] que determinó la dosis letal 50 (DL50) necesaria para establecer el índice de resistencia (IR), entendiéndose por el IR el número de veces que se incrementa la DL50 de la cepa susceptible para producir los mismos efectos en la cepa de estudio o resistente. 3, record 1, Spanish, - dosis%20letal%20mediana
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: