Where does “ruminous” come from?

ruminous (English) comes from English ruminate, from Latin rūminātus, from Latin ruminor, from Latin rumen, from Proto-Indo-European sréwmn̥, from Proto-Indo-European srew-, from Proto-Indo-European ser- — to flow; to guard; to bind, to tie together.

Ancestry of “ruminous”, step by step

StepLanguageWordMeaning
1EnglishruminateTo chew cud. Involves regurgitating partially...
2Latinrūminātuschewed the cud, having chewed the cud
3LatinruminorI chew the cud; I ruminate
4Latinrumenthroat, gullet
5Proto-Indo-Europeansréwmn̥
6Proto-Indo-Europeansrew-to flow, stream
7Proto-Indo-Europeanser-to flow; to guard; to bind, to tie together
Every word from Proto-Indo-European ser-
ruminous — Etymology, Origin & Word History | Etymology Explorer