What does OS stand for?

The list of OS abbreviation meanings.

Stands For|797Abbreviated As|0Related|0

797 entries under topic. ×

157
Operating System(Computer network, Computers, Internet jargon)
8
Office of the Secretary(Health, Medical, Medicine)
6
Operations Support(Emergency Management, Emergency, Military)
4
Operational Support(Military)
2
Oh, Shit(Military)
2
Optical Sight(Military)
1
Observers School(Armed Forces, Royal military, Air Force)
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APASmart Define. (2018). os. Retrieved September 23, 2026, from http://smartdefine.org/os/abbreviations/f/Military
ChicagoSmart Define. 2018. "os" http://smartdefine.org/os/abbreviations/f/Military (accessed September 23, 2026).
HarvardSmart Define 2018, os, Smart Define, viewed 23 September, 2026, <http://smartdefine.org/os/abbreviations/f/Military>.
MLASmart Define. "os" 9 February 2018. Web. 23 September 2026. <http://smartdefine.org/os/abbreviations/f/Military>