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{%type%} Definitions

WordNet 3.0Copyright Princeton University


Short "hint"

n. - The time required for fifty percent of the atoms of a given amount of a radioactive substance to disintegrate.

Usage examples (35)
  • One of the properties that govern isotopes is a phenomenon called half-life.
  • But it does have a-- a reasonably short half-life.
  • It ` s very fast acting but has a very short half-life.
  • Methoprene was found to have a half-life of 18 h in 0-18 for more
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