Oro-

//ɔː.ɹə(ʊ)// prefix

prefix ·Rare ·Advanced level

Definitions

Prefix
  1. 1
    Of or pertaining to the mouth. morpheme
  2. 2
    Of or pertaining to the mountains. morpheme

Etymology

Etymology 1

From Latin ōs (“the mouth”).

Etymology 2

From Ancient Greek ὄρος (óros, “mountain, high ground”), from ὄρνῡμῐ (órnūmĭ, “to stir, stir up; to urge on, incite”) + -ος (-os, nominal suffix).

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.