Where does “oreo-” come from?

oreo- (English) comes from Ancient Greek ὄρος, from Ancient Greek ὄρνυμι, from Proto-Indo-European h₃er- — to move, to stir; to rise, to spring; to quarrel,...

Ancestry of “oreo-”, step by step

StepLanguageWordMeaning
1Ancient Greekὄροςa mountain, hill; mountain chain; district,...
2Ancient Greekὄρνυμιto set upon, let loose upon, move on; to awaken,...
3Proto-Indo-Europeanh₃er-to move, to stir; to rise, to spring; to quarrel,...

Words derived from “oreo-

Every word from Proto-Indo-European h₃er-Every word from Ancient Greek ὄρνυμιEvery word from Ancient Greek ὄρος