lethal.
Of, pertaining to, or causing death; deadly; mortal; fatal.
Meaning & usage
Of, pertaining to, or causing death; deadly; mortal; fatal.
Where this word comes from
Learned borrowing from Latin lētālis (“deadly, mortal, fatal”), improperly written lēthālis, from lētum (“death”), improperly written as lēthum, from a supposed connection with Ancient Greek λήθη (lḗthē, “oblivion, forgetfulness”).
Any weapon that causes death.
An allele that causes the death of the organism that carries it.
Where this word comes from
Learned borrowing from Latin lētālis (“deadly, mortal, fatal”), improperly written lēthālis, from lētum (“death”), improperly written as lēthum, from a supposed connection with Ancient Greek λήθη (lḗthē, “oblivion, forgetfulness”).
One of the higher alcohols of the paraffine series obtained from spermaceti as a white crystalline solid.
Where this word comes from
Abbreviation of “lauric acid ethereal salt”, so called because it occurs in the ethereal salt of lauric acid.
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Definitions, grammatical labels, IPA, etymology and examples: Wiktionary contributors, extracted by Kaikki / Wiktextract. Adapted under CC BY-SA 4.0. Selected fields and authored examples are shown; third-party quotations and audio are omitted. See contributor history.
Last enriched 2026-09-10. Definitions are in English. Romanizations are shown when supplied by the source; syllable estimates are omitted for unsupported scripts.