Half-life Definition

hăflīf, häf-
half-lives
noun
The constant time period required for the disintegration of half of the atoms in a sample of some specific radioactive substance.
Webster's New World
The time required for half the quantity of a drug or other substance deposited in a living organism to be metabolized or eliminated by normal biological processes.
American Heritage Medicine
The time it takes for half of something to decompose, reduce in strength or effectiveness, etc.
Webster's New World
The time required for the radioactivity of material taken in by a living organism to be reduced to half its initial value by a combination of biological elimination processes and radioactive decay.
American Heritage Medicine

Life.

Webster's New World
Synonyms:

Other Word Forms of Half-life

Noun

Singular:
half-life
Plural:
half-lives

Origin of Half-life

Half-life Sentence Examples

  • At normal atmospheric pressures, but breathing 100 percent oxygen, the half-life for the elimination of CO from the body is 50 to 70 minutes.

  • If protein turnover rates are measured in growing meat animals, the half-life for protein synthesis is shorter than the half-life for protein catabolism.

  • Seed in soil has a half-life of 3 months.

  • Counter Strike is a mod of the first-person shooter Half-Life released for the PC in 2000 and the Xbox in 2004.

  • Results show that CAT-192 appears well tolerated, with a prolonged half-life of around 40 days in healthy volunteers.

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Words Starting With

HHAHAL

Words Ending With

EFEIFE

Unscrambles

half-life

Words Starting With H and Ending With E

Starts With H & Ends With EStarts With HA & Ends With EStarts With H & Ends With FE

Word Length

9 Letter Words9 Letter Words Starting With H9 Letter Words Ending With E