Where does “-thrin” come from?

-thrin (English) comes from English pyrethrin, from English pyrethrum, from Old English pyretre, from Latin pyrethrum, from Ancient Greek πύρεθρον, from Ancient Greek πῦρ, from Proto-Indo-European péh₂wr̥ — bonfire; spelt.

Ancestry of “-thrin”, step by step

StepLanguageWordMeaning
1EnglishpyrethrinAny of a number of naturally occurring...
2EnglishpyrethrumAny of several daisy-like perennial African...
3Old Englishpyretrepellitory plant of the genus
4Latinpyrethrum
5Ancient Greekπύρεθρονpellitory of Spain
6Ancient Greekπῦρa fire; lightning; a fever
7Proto-Indo-Europeanpéh₂wr̥bonfire; spelt

Words derived from “-thrin

Every word from Proto-Indo-European péh₂wr̥