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Os Very Common

Os has 13 different meanings across 2 categories:

Noun · Proper Noun

Definitions
Noun
1

a mouth or mouthlike opening

os
2

a hard brittle blue-grey or blue-black metallic element that is one of the platinum metals; the heaviest metal known

3

(computer science) software that controls the execution of computer programs and may provide various services

4

the left eye

5

rigid connective tissue that makes up the skeleton of vertebrates

6

an Ordnance Survey map.

7

Synonym of bone.

8

An opening or entrance to a passage, particularly one at either end of the cervix, internal (to the uterus) or external (to the vagina).

9

An osar or esker.

10

Alternative form of o's.

11

plural of O

Adjective
1

Abbreviation of outsize (clothes for large people)