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| half-life period; half change value | |||
| radioactive half-life | |||
| half-life The time required for one-half the atoms of a given amount of radioactive material to undergo radioactive decay | |||
| elimination half-time | |||
| period of half change; half life; half period | |||
| biological half-life | |||
| effective life | |||
| half-life | |||
| half-life (radioactive); radioactive halflife (radioactive); period (of decay, radioactive); half-value period (radioactive); physical half-life (contrary to biological halflife, of a radionuclide or particle, radioactive); decay period (radioactive); disintegration period (radioactive); radioactive half-period (radioactive) | |||
| demi-vie: 35 phrases in 13 subjects |