Where does “Thermopylae” come from?

Thermopylae (Latin) comes from Ancient Greek Θερμοπύλαι, from Ancient Greek θερμο-, from Ancient Greek θερμός, from Ancient Greek σφαῖρα, from Ancient Greek -ειδής, from Ancient Greek -ής, from Proto-Indo-European -ēs, from Proto-Indo-European -ess — Creates action nouns or result nouns from verbs;...

Ancestry of “Thermopylae”, step by step

StepLanguageWordMeaning
1Ancient GreekΘερμοπύλαι
2Ancient Greekθερμο-Used to derive words relating to warmth, heat;...
3Ancient Greekθερμόςwarm, hot, boiling, glowing; hotheaded, hasty,...
4Ancient Greekσφαῖραball, globe, sphere
5Ancient Greek-ειδήςlike, connected to, from the nature of, full of;...
6Ancient Greek-ήςadjective suffix
7Proto-Indo-European-ēsPrimarily forms adjectival bahuvrīhi compounds
8Proto-Indo-European-ess
9Proto-Indo-European-osCreates action nouns or result nouns from verbs;...

Words derived from “Thermopylae

Every word from Proto-Indo-European -osEvery word from Ancient Greek -ειδήςEvery word from Ancient Greek σφαῖρα