Os

//ˌoʊ ˈɛs// adj, adv, name, noun, slang

Definitions

Adjective
  1. 1
    Initialism of outsize, clothes for large people. abbreviation, alt-of, initialism, not-comparable
  2. 2
    Initialism of oversize. abbreviation, alt-of, initialism, not-comparable
  3. 3
    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. abbreviation, alt-of, initialism, not-comparable
  4. 4
    Abbreviation of offscreen, indicating a line of dialogue is spoken by someone not visible onscreen. abbreviation, alt-of, not-comparable
  5. 5
    Initialism of over shoulder. abbreviation, alt-of, initialism, not-comparable
Adverb
  1. 1
    Initialism of overseas. Australia, abbreviation, alt-of, informal, initialism, not-comparable

    "You did the overseas trip. You went OS."

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

    "We've got an OS of the Cuckmere area."

  2. 2
    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 of the Vulnus or Wound."

  3. 3
    An opening or entrance to a passage, particularly one at either end of the cervix, internal (to the uterus) or external (to the vagina). sometimes

    "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."

  4. 4
    An osar or esker.
  5. 5
    Alternative form of o's. alt-of, alternative, rare
Show 9 more definitions
  1. 6
    plural of O form-of, plural
  2. 7
    rigid connective tissue that makes up the skeleton of vertebrates wordnet
  3. 8
    Initialism of operating system. abbreviation, alt-of, initialism

    "I've decided to install two different OSes on my new laptop."

  4. 9
    a mouth or mouthlike opening wordnet
  5. 10
    Initialism of ordinary seaman. abbreviation, alt-of, initialism
  6. 11
    the left eye wordnet
  7. 12
    Initialism of oppidan scholar. abbreviation, alt-of, initialism
  8. 13
    (computer science) software that controls the execution of computer programs and may provide various services wordnet
  9. 14
    a hard brittle blue-grey or blue-black metallic element that is one of the platinum metals; the heaviest metal known wordnet

Etymology

Etymology 1

Borrowed from Latin os (“a bone”).

Etymology 2

Unadapted borrowing from Latin ōs (“the mouth”).

Etymology 3

Borrowed from Swedish ås.

Etymology 4

From o + -s.

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