half-life plural
half-life
The plural form of half-life is half-lives
H hDefinitions
- noun plural half-life Physics. the time required for one half the atoms of a given amount of a radioactive substance to disintegrate. 1
- noun plural 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 half-life Informal. a brief period during which something flourishes before dying out. 1