TERMIUM Plus®

The Government of Canada’s terminology and linguistic data bank.

ATTO [1 record]

Record 1 2010-05-18

English

Subject field(s)
  • Metrology and Units of Measure
Universal entry(ies)
DEF

SI prefix, one quintillionth; 10 to to minus eighteenth power.

OBS

The symbol "a" is in lower case.

OBS

Created in 1991 by the Conférence Générale des Poids et Mesures, from Danish-Norvegian "atten" (eighteen).

Key term(s)
  • atto

French

Domaine(s)
  • Unités de mesure et métrologie
Entrée(s) universelle(s)
DEF

Préfixe (symbole : a) qui, placé devant une unité, la multiplie par [10 à la moins dix-huitième puissance].

OBS

Le symbole est un «a» minuscule.

Key term(s)
  • atto

Spanish

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