TERMIUM Plus®
The Government of Canada’s terminology and linguistic data bank.
MICRA [1 record]
Record 1 - internal organization data 2022-11-30
Record 1, English
Record 1, Subject field(s)
- Metrology and Units of Measure
Universal entry(ies) Record 1
Record 1, Main entry term, English
- micrometre
1, record 1, English, micrometre
correct
Record 1, Abbreviations, English
Record 1, Synonyms, English
- micrometer 2, record 1, English, micrometer
correct, United States
- micron 1, record 1, English, micron
former designation, correct
Record 1, Textual support, English
Record number: 1, Textual support number: 1 DEF
The metric unit of measure for length equal to 0.001 [millimetres, or one millionth of a metre]. 3, record 1, English, - micrometre
Record number: 1, Textual support number: 1 CONT
The micrometre is commonly employed to measure the thickness or diameter of microscopic objects, such as microorganisms and colloidal particles. Minute distances—for example, the wavelengths of infrared radiation—are also given in micrometres. 3, record 1, English, - micrometre
Record number: 1, Textual support number: 1 OBS
In 1967 the International System of Units (SI) officially revoked the term "micron" and the symbol "μ." At that time, the systematic name "micrometre" became the official name of the unit, and "μm" became the official unit symbol. 4, record 1, English, - micrometre
Record 1, Key term(s)
- um
Record 1, French
Record 1, Domaine(s)
- Unités de mesure et métrologie
Entrée(s) universelle(s) Record 1
Record 1, Main entry term, French
- micromètre
1, record 1, French, microm%C3%A8tre
correct, masculine noun
Record 1, Abbreviations, French
Record 1, Synonyms, French
- micron 1, record 1, French, micron
former designation, correct, masculine noun
Record 1, Textual support, French
Record number: 1, Textual support number: 1 DEF
Unité de mesure de longueur valant un millionième de mètre. 2, record 1, French, - microm%C3%A8tre
Record number: 1, Textual support number: 1 OBS
Dans le Système international d'unités (SI), le nom systématique «micromètre» est devenu le nom officiel de l'unité en 1967, et «μm» est devenu le symbole officiel de l'unité. À ce moment, le terme «micron» et le symbole «μ» ont été retirés. 3, record 1, French, - microm%C3%A8tre
Record 1, Key term(s)
- um
Record 1, Spanish
Record 1, Campo(s) temático(s)
- Metrología y unidades de medida
Entrada(s) universal(es) Record 1
Record 1, Main entry term, Spanish
- micrómetro
1, record 1, Spanish, micr%C3%B3metro
correct, masculine noun
Record 1, Abbreviations, Spanish
Record 1, Synonyms, Spanish
- micra 1, record 1, Spanish, micra
former designation, feminine noun
- micrón 1, record 1, Spanish, micr%C3%B3n
former designation, masculine noun
Record 1, Textual support, Spanish
Record number: 1, Textual support number: 1 DEF
Unidad de longitud igual a una milésima de milímetro o millonésima de metro [en el sistema internacional de unidades]. 2, record 1, Spanish, - micr%C3%B3metro
Record number: 1, Textual support number: 1 OBS
En el sistema internacional de unidades, ya no se usan las voces micra y micrón, ahora reemplazadas por la de micrómetro. 2, record 1, Spanish, - micr%C3%B3metro
Record number: 1, Textual support number: 2 OBS
micrón: Símbolo: µ (obsoleto). 3, record 1, Spanish, - micr%C3%B3metro
Record 1, Key term(s)
- um
- mu
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: