One of the mysteries of the English language finally explained.
More fully "methantheline bromide". An anticholinergic drug used to treat peptic ulcer, hyperhidrosis, and bladder spasm; N,N- diethyl-N-methyl-2-[(9H-xanthen-9-ylcarbonyl)oxy]ethanaminium bromide), C₂₁H₂₆BrNO₃. [International Nonproprietary Name (1996) and British Approved Name (1997): methanthelinium bromide.]
1950s; earliest use found in Arthur Grollman (b. 1901). Apparently from meth- (in methyl: see note s.v. meth-) + -anthe- + -l- (in systematic name of compound, or perhaps simply epenthetic) + -ine.
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