noun ·Rare ·Advanced level

Definitions

Noun

1. 1
   A quaternary ammonium cation whose iodide is used as an antimuscarinic. uncountable

Etymology

From thi(oph)e(ne) + mo(rpholine) + -ium (“quaternary ammonium compound”).

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.