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half-life



Pronunciation: (haf'līf", häf'-), Strict Standards: Non-static method FenSites::linkTo() should not be called statically in /site/html/dictionary/half-life.html on line 71 [key]
n.,
pl. -livesPronunciation: (-līvz"). Strict Standards: Non-static method FenSites::linkTo() should not be called statically in /site/html/dictionary/half-life.html on line 85 [key]

1. Physics.the time required for one half the atoms of a given amount of a radioactive substance to disintegrate.
2. Pharm.the time required for the activity of a substance taken into the body to lose one half its initial effectiveness.
3. Informal.a brief period during which something flourishes before dying out. Also,half' life",half'life".Also called half'-life pe"riod.

Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.

Strict Standards: Non-static method FenSites::linkTo() should not be called statically in /site/html/dictionary/half-life.html on line 132 half-length Strict Standards: Non-static method FenSites::linkTo() should not be called statically in /site/html/dictionary/half-life.html on line 140 half-light
See also:
  • Strict Standards: Non-static method FenSites::linkTo() should not be called statically in /site/html/dictionary/half-life.html on line 151 half-life (Thesaurus)
  • Strict Standards: Non-static method FenSites::linkTo() should not be called statically in /site/html/dictionary/half-life.html on line 153 half-life (Encyclopedia)

 

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