'OS' definitions:

Definition of 'os'

From: WordNet
noun
A mouth or mouthlike opening
noun
A hard brittle blue-grey or blue-black metallic element that is one of the platinum metals; the heaviest metal known [syn: osmium, Os, atomic number 76]
noun
(computer science) software that controls the execution of computer programs and may provide various services [syn: operating system, OS]
noun
The left eye [syn: oculus sinister, OS]
noun
Rigid connective tissue that makes up the skeleton of vertebrates [syn: bone, os]

Acronyms for 'OS'

From: V.E.R.A.
  • Operating System