See also: Kernel, List of operating systems, and Comparison of operating systems

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OS may refer to: O.S. Engines, a Japanese manufacturer of model aircraft engines; Oculus sinister, meaning "left eye" in eyeglass prescriptions " Old Style date" (as "O.S."), a ...

OS [L.] o´culus sinis´ter (left eye). Os osmium. os (os) pl. o´ra [L.] 1. any body orifice. 2. the mouth. os pl. os´sa [L.] bone. Os. The symbol for the element osmium.

• Johnson set for next chapter in O's 'pen • Sarfate clears waivers, sent to Norfolk • Guthrie, Bergesen remain motivated • O's prospect suspended 50 games

Os. The symbol for the element osmium. OS. abbr. 1. or O/S Old Style. 2. ordinary seaman. os 1 (s) n. pl. o·ra (ôr, r) A mouth or an opening. [Latin s, mouth; see s-in Indo-European roots.]

MySpace Music profile for O+S. Download O+S Alternative / Pop / Indie music singles, watch music videos, listen to free streaming mp3s, & read O+S's blog.

The entry page to O&S Trucking, where you can find truck driving related information, online truck driving applications and news on the trucking industry. O&S Online Application

Acronym Definition; OS: Operating System: OS: Oh Shoot (polite form) OS: Oculus Sinister (Latin: Left Eye) OS: Open Source: OS: Overseas: OS: Omaha Steaks (meat company)

Etymology: Swed ås, ridge, pl. åsar Gr ōmos, L umerus, shoulder