Meaning Of The Word Half-life

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Half-life Meaning

Half-life Definition
Half-life Definition

What's The Definition Of Half-life?

half-life
countable noun: The half-life of a radioactive substance is the amount of time that it takes to lose half its radioactivity.

half-life in American English
the constant time period required for the disintegration of half of the atoms in a sample of some specific radioactive substance
noun: the time required for one half the atoms of a given amount of a radioactive substance to disintegrate

half-life in British English
noun: the time taken for half of the atoms in a radioactive material to undergo decay

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