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OS

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OS¹

  • /ˌoʊ ˈɛs/

proper noun

  1. abbreviation, initialism Initialism of Owen Sound.Owen Sound
  2. abbreviation, initialism Initialism of The Ordnance Survey, official mapping agency in Great Britain (see also the noun below).The Ordnance Survey
  3. abbreviation, initialism Initialism of Old Saxon.Old Saxon

adjective

  1. abbreviation, initialism, not comparable Initialism of outsize, clothes for large people.outsize
  2. abbreviation, initialism, not comparable Initialism of oversize.oversize
  3. abbreviation, initialism, not comparable Initialism of Old Style, a term used in English language historical studies to indicate that a date conforms to the Julian calendar instead of the modern Gregorian calendar.Old Style
  4. abbreviation, not comparable Abbreviation of offscreen, indicating a line of dialogue is spoken by someone not visible onscreen.offscreen
  5. abbreviation, initialism, not comparable Initialism of over shoulder.over shoulder

adverb

  1. Australia, abbreviation, informal, initialism, not comparable Initialism of overseas.overseas You did the overseas trip. You went OS.

noun OSes · OSs · OS's

  1. UK An Ordnance Survey map. We've got an OS of the Cuckmere area.
  2. abbreviation, initialism Initialism of operating system.operating system I've decided to install two different OSes on my new laptop.
  3. abbreviation, initialism Initialism of ordinary seaman.ordinary seaman
  4. abbreviation, initialism Initialism of oppidan scholar.oppidan scholar

os²

  • /ɒs/ UK
  • /ɑs/ US

Rhymes with -ɒs

Where it comes from

Unadapted borrowing from Latin os (“bone”).

noun ossa

  1. Synonym of bone. I was once, I remember, called to a Patient, who had received a violent Contuſion in his Tibia, by which the exterior Cutis was lacerated, ſo that there was a profuſe ſanguinary Diſcharge; and the interior Membranes were ſo divellicated, that the Os or Bone very plainly appeared through the Aperture

os³

  • /ɒs/ UK
  • /ɑs/ US

Rhymes with -ɒs

Where it comes from

Etymology tree

Proto-Indo-European *h₁óh₃s

Proto-Italic *ōs

Latin ōsubor.

English os

Unadapted borrowing from Latin ōs (“mouth”).

noun ora

  1. sometimes An opening or entrance to a passage, particularly one at either end of the cervix, internal (to the uterus) or external (to the vagina). The instrument closed, as seen in Fig. 1, is then passed along the finger to the os, in and through the cervix up to the fundus of the uterus, which may be determined both by the distance and the resistance to the broad rounded head of the Capiat.

os⁴

  • /ɒs/ UK
  • /ɑs/ US

Rhymes with -ɒs

Where it comes from

Borrowed from Swedish ås.

noun osar

  1. An osar or esker.

os⁵

  • /əʊz/ UK
  • /oʊz/ US

Rhymes with -əʊz

Where it comes from

From o + -s.

noun

  1. alternative, rare Alternative form of o's.o's

Os⁶

noun

  1. plural plural of O

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