ALL meanings of biological half-life
half-life
B b - noun biological half-life the time required for half of a quantity of radioactive material absorbed by a living tissue or organism to be naturally eliminated 3
- noun plural biological half-life Physics. the time required for one half the atoms of a given amount of a radioactive substance to disintegrate. 1
- noun plural biological half-life Also called biological half-life. Pharmacology. the time required for the activity of a substance taken into the body to lose one half its initial effectiveness. 1
- noun plural biological half-life Informal. a brief period during which something flourishes before dying out. 1