Where does “troponymous” come from?

troponymous (English) comes from English ous, from English ou, from Afrikaans ou, from Dutch oud, from Middle Dutch out, from Old Dutch ald, from Proto-West Germanic ald, from Proto-Germanic aldaz — to grow, nourish.

Ancestry of “troponymous”, step by step

troponymous traces back through two separate lines of ancestry.

via English ous

StepLanguageWordMeaning
1Englishousplural of ou
2EnglishouA probably extinct species of Hawaiian...
3AfrikaansouAn old fellow, guy, bloke; attributive form of...
4Dutchoudold
5Middle Dutchoutold
6Old Dutchald
7Proto-West Germanicaldold
8Proto-Germanicaldazold, grown up
9Proto-Indo-Europeanh₂eltós
10Proto-Indo-Europeanh₂él-to grow, nourish

via English troponym

StepLanguageWordMeaning
1EnglishtroponymA verb that indicates more precisely the manner...
2Englishtropo-Characterized by or related to turning motion;...
3Ancient Greekτρόποςa turn, way, manner, style; a trope or figure of...
4Ancient Greekτροπήa turning; turning away the enemy, a rout;...
5Ancient Greeksuffix of feminine nouns in the [[Appendix:Ancient Greek first declension
6Ancient Greek-ᾱnominal suffix
7Proto-Indo-European-éh₂
Every word from Proto-Indo-European h₂él-Every word from Proto-Indo-European h₂eltósEvery word from Proto-Germanic aldaz