| Full diacritics: ὄρειον | Medium diacritics: ὄρειον | Low diacritics: όρειον | Capitals: ΟΡΕΙΟΝ |
| Transliteration A: óreion | Transliteration B: oreion | Transliteration C: oreion | Beta Code: o)/reion |
τό, A = πολύγονον θῆλυ, mare's tail, Hippuris vulgaris, Plin. HN27.115. ὀρείονες, v. ὀρεᾶνες.
