lethal Meaning, Definition & Usage

  1. adjective satellite of an instrument of certain death
    deadly.
    • deadly poisons
    • lethal weapon
    • a lethal injection

WordNet

Leth"al noun
Etymology
Lauric + ether + alcohol.
Definitions
  1. (Chem.) One of the higher alcohols of the paraffine series obtained from spermaceti as a white crystalline solid. It is so called because it occurs in the ethereal salt of lauric acid.
Le"thal adjective
Etymology
L. lethalis, letalis, fr. lethum, letum, death: cf. F. léthal.
Definitions
  1. Deadly; mortal; fatal. "The lethal blow." W. Richardson. -- Le"thal*ly, adv.

Webster 1913