os
noun pl. ora
a mouth; opening
- Old Saxon
- old series
- Old Style
- operating system
- Ordinary Seaman
- out of stock
See os in American Heritage Dictionary 4
(ŏs)
noun pl. o·ra (ôrˈə, ōrˈə) A mouth or an opening.
(ŏs)
noun pl. os·sa (ŏsˈə) A bone.
(ōs)
noun pl. os·ar (ōˈsärˌ) The symbol for the element
osmium .
abbreviation- or O/S Old Style
- ordinary seaman
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