half life

2 definitions found

half life - WordNet (r) 2.1 (2005) :

  half life
      n 1: the time required for something to fall to half its initial
           value (in particular, the time for half the atoms in a
           radioactive substance to disintegrate) [syn: half life,
           half-life]

half life - Moby Thesaurus II by Grady Ward, 1.0 :

  19 Moby Thesaurus words for "half life":
     activity, artificial radioactivity, contamination, curiage,
     decontamination, fallout, natural radioactivity, nuclear radiation,
     radiant energy, radiation, radioactive radiation, radioactivity,
     radiocarbon dating, radiolucency, radiopacity, radiosensibility,
     radiosensitivity, saturation point, specific activity