TERMIUM Plus®

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

half-life period [1 record]

Record 1 2015-10-06

English

Subject field(s)
  • Environmental Studies and Analyses
DEF

The period of time after which the concentration or mass of a substance, undergoing degradation or decay, has fallen to half of its initial value.

OBS

half-life period: term and definition standardized by ISO.

French

Domaine(s)
  • Études et analyses environnementales
DEF

Période de temps après laquelle la concentration ou la masse d'une substance, subissant une dégradation ou une désintégration, atteint la moitié de sa valeur initiale.

OBS

période de demi-vie : terme et définition normalisés par l'ISO.

Spanish

Campo(s) temático(s)
  • Estudios y análisis del medio ambiente
DEF

Período de tiempo después del cual la concentración o masa de una sustancia sometida a degradación o desintegración ha descendido a la mitad de su valor inicial.

OBS

El término es aplicable solamente a las reacciones de orden cero o uno.

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