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open

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[ UK /ˈə‍ʊpən/ ]
[ US /ˈoʊpən/ ]
VERB
  1. become available
    an opportunity opened up
  2. have an opening or passage or outlet
    The bedrooms open into the hall
  3. display the contents of a file or start an application as on a computer
  4. make the opening move
    Kasparov opened with a standard opening
  5. cause to open or to become open
    Mary opened the car door
  6. start to operate or function or cause to start operating or functioning
    open a business
  7. begin or set in action, of meetings, speeches, recitals, etc.
    He opened the meeting with a long speech
  8. spread out or open from a closed or folded state
    spread your arms
    open the map
  9. afford access to
    the door opens to the patio
    The French doors give onto a terrace
  10. make available
    This opens up new possibilities
  11. become open
    The door opened
ADJECTIVE
  1. ready or willing to receive favorably
    receptive to the proposals
  2. (of textures) full of small openings or gaps
    a loose weave
    an open texture
  3. open to or in view of all
    an open letter to the editor
    an open protest
  4. accessible to all
    open season
    an open economy
  5. openly straightforward and direct without reserve or secretiveness
    his candid eyes
    an open and trusting nature
    a heart-to-heart talk
  6. open and observable; not secret or hidden
    an overt lie
    open ballots
    overt hostility
    overt intelligence gathering
  7. used of mouth or eyes
    keep your eyes open
    his mouth slightly opened
  8. affording free passage or view
    open waters
    a clear path to victory
    a clear view
    the open countryside
  9. not sealed or having been unsealed
    the opened package lay on the table
    the letter was already open
  10. possibly accepting or permitting
    a passage capable of misinterpretation
    open to interpretation
    the time is fixed by the director and players and therefore subject to much variation
    an issue open to question
  11. affording free passage or access
    open drains
    the road is open to traffic
    open ranks
  12. affording unobstructed entrance and exit; not shut or closed
    they left the door open
    an open door
  13. not having been filled
    the job is still open
  14. not requiring union membership
    an open shop employs nonunion workers
  15. not brought to a conclusion; subject to further thought
    our position on this bill is still undecided
    an open question
    our lawsuit is still undetermined
  16. (set theory) of an interval that contains neither of its endpoints
  17. having no protecting cover or enclosure
    open sports cars
    an open boat
    an open fire
  18. ready for business
    the stores are open
  19. with no protection or shield
    the exposed northeast frontier
    open to the weather
    an open wound
  20. without undue constriction as from e.g. tenseness or inhibition
    the clarity and resonance of an open tone
    her natural and open response
  21. not defended or capable of being defended
    an open city
    open to attack
NOUN
  1. a clear or unobstructed space or expanse of land or water
    finally broke out of the forest into the open
  2. a tournament in which both professionals and amateurs may play
  3. information that has become public
    the facts had been brought to the surface
    all the reports were out in the open
  4. where the air is unconfined
    camping in the open
    the concert was held in the open air
    he wanted to get outdoors a little
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How To Use open In A Sentence

  • Sodium thiopental was used by most U.S. states as part of a lethal injection combination, but many have switched to an alternative drug called pentobarbital amid an ongoing shortage. The Seattle Times
  • Laura Wade's Posh, timed to open as the Tories edged into power in May 2010, reminded us just what we were in for: overprivileged hooligans in drinking-society blazers who trash a pub as thoughtlessly as they will trash the country. Dominic Cooke: a life in theatre
  • I didn't open my mouth until he talked himself out.
  • The right back found himself in unfamiliar territory in the opposing penalty area after a swift exchange of passes that opened up Reading's defence. Times, Sunday Times
  • Management claimed the lockout was a temporary measure and that the plant would be reopened on May 9.
  • Note that you'll be able to find the demonstration projects themselves as open-source projects on the companion site to the column (see Resources).
  • We berate those who cross the line and leave the immature and underdeveloped open to the physical abuse of contact and collision sports.
  • The scale of the economic gulf between the two parties came as two polls yesterday showed that the election remained wide open. Times, Sunday Times
  • The baby grows fine hair, fingernails and teeth, and the eyes open and close.
  • Sony Pictures Animation has a full slate of films including the mouth-watering 3D comedy Cloudy with a Chance of Meatballs, which opened as the #1 movie in North America on September 18, Hotel Transylvania, now in pre-production and, in association with Columbia Pictures, The Smurfs, now in production. Anton Yelchin and Fred Armisen Join The Smurfs | /Film
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