English
simpsonite
From Simpson + -ite.
Today it means
noun A trigonal-pyramidal mineral containing aluminum, hydrogen, niobium, oxygen, and tantalum.
Sources
Sources: Wiktionary, “simpsonite”. 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 / simpsonite