Main meanings of os in English

: os1os2Os3OS4

os1

Pronunciation /ɒs/

Translate os into Spanish

nounplural noun ossa/ɒsə/

Anatomy
  • A bone (used chiefly in Latin names of individual bones, e.g. os trapezium).

    ‘In this group, the cortex of the os sacrum was destroyed and had a spongelike rather than compact appearance.’
    • ‘Besides this unambiguous distinguishing character, a second, derived character, exists which is particular to the Carnivora: in the wrist the joint bones, scaphoid, lunate, and os centrale, are fused.’

Origin

Latin.

Main meanings of os in English

: os1os2Os3OS4

os2

Pronunciation /ɒs/

Translate os into Spanish

nounplural noun ora/ˈɔːrə/

Anatomy
  • An opening or entrance to a passage, especially one at either end of the cervix of the uterus.

    ‘The distance between the internal and external os was measured both as a straight line and also as a curved line along the endocervical canal.’
    • ‘The internal os closes by 3 days, the external os by 3 weeks.’

Origin

Mid 19th century from Latin, ‘mouth’.

Main meanings of Os in English

: os1os2Os3OS4

Os3

Translate Os into Spanish

  • The chemical element osmium.

Main meanings of OS in English

: os1os2Os3OS4

OS4

Pronunciation /əʊˈɛs/

Translate OS into Spanish

abbreviation

  • 1(in calculating dates) Old Style.

  • 2Computing
    Open-source.

  • 3Computing
    Operating system.

  • 4Ordinary Seaman.

  • 5(in the UK) Ordnance Survey.

  • 6(as a size of clothing) outsize.

  • 7Out of stock.

  • 8Overseas.