Half Life

nounverified·updated May 18, 2026

GlossaryL1 — what DictionaryL2 — how used ThesaurusL3 — relations Universaleverything

the time required for something to fall to half its initial value (in particular, the time for half the atoms in a radioactive substance to disintegrate)

MWE

Classifications

per-axis with provenance

Entity Type

Unknown—authoritativeglossary_import_default_pending_classifier

?unassignedlast reviewed —

Sensitivity

unclassified

Information Class

unclassified

Variants

6 surface forms

synonym: half lifehalf-life
alternatephrasing: Half-Life
plural: Half Lives
possessive: Half Life's
pluralpossessive: Half Lives'

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