English
properidine
From prop- + -eridine (“pethidine derivative”).
Today it means
noun A particular narcotic painkiller.
Sources
Sources: Wiktionary, “properidine”. By Wiktionary contributors, CC BY-SA 4.0, via kaikki.org (dump of Oct 3 2026); text adapted and restructured. Language periods are conventional ranges, not dates for this word. License.
Etymograph / properidine