OS
WIKIMEDIA DISAMBIGUATION PAGE
Os; O/S; O.S.; O.s.; OS (disambiguation); Os.; O S; O-S; O-s; O. S.; Os (disambiguation); Os, Norway
¦ abbreviation
1. (in calculating dates) Old Style.
2. Computing operating system.
3. Ordinary Seaman.
4. (in the UK) Ordnance Survey.
5. (as a size of clothing) outsize.
6. out of stock.