OH
From Wikipedia, the free encyclopedia
OH may mean:
- Ohio (United States postal abbreviations)
- Comair (IATA airline designator)
- in chemistry:
- Hydroxy
- Hydroxide
- Specifically, the Hydroxyl radical
- is a USCS symbol for an organic-rich clay and/or silt of high plasticity
- Olduvai Hominid
- A former employee of the Appalachian Mountain Club's Hut System in the White Mountains of New Hampshire (Old Hutmans Association)
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