Definition of methohexital in US English:

methohexital

noun

Pharmacology
  • A derivative of barbituric acid, used, as the sodium salt (more fully "methohexital sodium", "sodium methohexital"), as a short-acting intravenous anaesthetic; (1-methyl-5-allyl-5-[1-methyl-2-pentynyl])barbituric acid, C₁₄H₁₈N₂O₃.

Origin

1950s. From meth- (in methyl: see note s.v. meth-) + -o- + hex- + -ital.

Pronunciation

methohexital

/ˌmɛθəʊˈhɛksɪtl/