TERMIUM Plus®

From: Translation Bureau

On social media

Consult the Government of Canada’s terminology data bank.

ATTOSECONDE [1 record]

Record 1 2015-09-09

English

Subject field(s)
  • Metrology and Units of Measure
  • Scientific Measurements and Analyses
Universal entry(ies)
as
correct, symbol
DEF

... an SI [International System] unit of time equal to 10−18 of a second (one quintillionth of a second).

CONT

An attosecond is equal to 1000 zeptoseconds, or 1⁄1000 of a femtosecond.

OBS

The word "attosecond" is formed by the prefix "atto" and the unit "second." "Atto-" was made from the Danish word for eighteen ("atten").

French

Domaine(s)
  • Unités de mesure et métrologie
  • Mesures et analyse (Sciences)
Entrée(s) universelle(s)
as
correct, symbol
DEF

Unité de mesure de temps du Système international d'unités (SI) qui est de 10−18 s.

OBS

L'attoseconde correspond à un trillionième de seconde.

Spanish

Save record 1

Copyright notice for the TERMIUM Plus® data bank

© Public Services and Procurement Canada, 2026
TERMIUM Plus®, the Government of Canada's terminology and linguistic data bank
A product of the Translation Bureau

Features

GCtranslate (available on the Government of Canada network only)

Use this artificial intelligence prototype to translate Government of Canada content up to and including Protected B. Available to employees of selected departments and agencies only.

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: