TERMIUM Plus®

The Government of Canada’s terminology and linguistic 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

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