WordReference Random House Learner's Dictionary of American English © 2020
o•pen /ˈoʊpən/USA pronunciation
adj. WordReference Random House Unabridged Dictionary of American English © 2020
- not closed or barred at the time mentioned:She left the windows open at night.
- (of a door, window sash, etc.) set so as to permit passage through the opening that it can be used to close;
not locked:The door is open; come in.
- arranged so that the inside is easy to reach:The dresser drawer was open.
- mostly free of things that block or that prevent movement through:an open floor plan.
- built or designed so as not to be fully enclosed:[before a noun]an open staircase.
- having mostly large or numerous empty spaces, gaps, or intervals:[before a noun]open ranks of soldiers.
- not covered or closed:His eyes were open.
- without a covering, esp. a covering that protects:an open wound.
- extended, unfolded, or arranged:an open newspaper; The book was open on the desk.
- without restrictions or limits as to who may participate:open enrollment.
- available:Which job is open?
- available or possible for one to do:[be + ~ + to]What course of action is open to us now?
- ready for or carrying on normal trade or business:The new store is now open.
- not reserved, engaged, or committed:open time on the calendar.
- so clear that all can see or know:[before a noun]open disregard of the rules.
candid:always open and fair in his dealings with others.
- generous:to give with an open hand.
- likely to receive:[be + ~ + to + object]He left himself open to criticism.
- willing to receive or accept:[be + ~ + to]open to suggestions.
unsettled:several open questions.
- (in sports) unguarded by an opponent:An open receiver caught the pass.
- to (cause to) be moved from a shut or closed position, such as a door, window, etc.: [~ + object]He opened the door.[no object]The door slowly opened.
- to remove a blockage or barrier from:[~ + object]to open the road after a snowstorm.
- (of a road, pass, etc.) to have a blockage or barrier removed:[no object]The road finally opened when the blizzard stopped.
- to (cause to) be not covered or closed;
(cause to) have certain parts apart: [~ + object]He opened his mouth to speak.[no object]His eyes opened suddenly.
- to arrange so that the inside of (a box, drawer, etc.) is easily reached:[~ + object]Open the toolbox.
- to make available:[~ + object]to open a port for trade.
- to (cause to) be made ready for customers or normal work activity: [~ + object]They open the store at nine o'clock.[no object]They open at nine o'clock.
- to (cause to) be established or set up for business purposes or for public use: [~ + object]The company will open an office in Singapore.[no object]A new store opened on Main Street last week.
- to (cause to) be set in action, begun, or started: [~ + object]opened the meeting with a short speech.[no object]The meeting opened with a short speech.
- [~ + object]
- to expose to view:The surgeon opened the chest cavity.
- to disclose;
show:He opened his heart to her (= He let her see his true feelings).
- to (cause to) be expanded, unfolded, spread out;
(cause to) be turned or arranged to be read: [~ + object]to open a map.[no object]The map opened easily.
- to (cause to) be less tight, less compact, or less closely spaced: [~ + object]The soldiers began to open ranks.[no object]The ranks of the soldiers began to open.
- to make (the mind) ready to receive knowledge, sympathy, etc.: [~ + object]College opened his mind.[no object]His mind opened when he went to college.
- to make or produce (a way or path):[~ + object]to open a way through a crowd.
- to provide a way of approaching a place:[no object]a door that opens into a garden.
- to part or seem to part:[no object]The clouds opened.
- to (cause to) spread out: [~ + object]He opened his hand and revealed a shiny new quarter.[no object]His hand opened.
- to (cause to) spread or expand: [no object]The flower opened in the sunlight.[~ + object]The fisherman opened the oysters with a sharp knife.
- to (cause to) be created: [~ + up + object]The new program opens (up) new possibilities.[~ (+ up)]New possibilities open (up) thanks to this proposal.
- open up:
- to make or become open: [no object]The flower opened up in the sun.[~ + up + object]They opened up their shops.[~ + object + up]It was too early to open the shops up.
- [no object] to begin firing a gun or the like:The infantry opened up with their automatic weapons.
- [no object] to share or become willing to share one's feelings, confidences, etc.:had to learn to open up to others.
- an open or clear space:[uncountable; the + ~]was out in the open where he could be seen.
- the open air;
outdoors:[uncountable; the + ~]They slept out in the open.
- [uncountable; the + ~] open water, as of the sea.
- Sport a contest or tournament in which both amateurs and professionals may compete:[countable]tennis opens.
o•pen•ness, n. [uncountable]
- Idiomsopen someone's eyes, to make someone alert to a situation.
- Idiomsout in or in the open, not hidden;
not concealed:The secret is finally out in the open.
(ō′pən),USA pronunciation adj.
- not closed or barred at the time, as a doorway by a door, a window by a sash, or a gateway by a gate:to leave the windows open at night.
- (of a door, gate, window sash, or the like) set so as to permit passage through the opening it can be used to close.
- having no means of closing or barring:an open portico.
- having the interior immediately accessible, as a box with the lid raised or a drawer that is pulled out.
- relatively free of obstructions to sight, movement, or internal arrangement:an open floor plan.
- constructed so as to be without cover or enclosure on the top or on some or all sides:an open boat.
- having relatively large or numerous spaces, voids, or intervals:an open architectural screen; open ranks of soldiers.
- perforated or porous:an open texture.
- relatively unoccupied by buildings, fences, trees, etc.:open country.
- not covered or closed;
with certain parts apart:open eyes; open mouth.
- without a covering, esp. a protective covering;
exposed:an open wound; open electrical wires.
- extended or unfolded:an open newspaper.
- without restrictions as to who may participate:an open competition; an open session.
- accessible or available to follow:the only course still open to us.
- not taken or filled;
vacant:Which job is open?
- ready for or carrying on normal trade or business:The new store is now open. The office is open on Saturdays.
- not engaged or committed:Have you any open time on Monday?
- accessible, as to appeals, ideas, or offers:to be open to suggestion.
- exposed to general view or knowledge;
existing, carried on, etc., without concealment:open disregard of the rules.
- acting publicly or without concealment, as a person.
- unreserved, candid, or frank, as persons or their speech, aspect, etc.:an open manner.
- generous, liberal, or bounteous:to give with an open hand.
- liable or subject:open to question; open to retaliation.
unsettled:several open questions.
- without effective or enforced legal, commercial, or moral regulations:an open town.
- unguarded by an opponent:an open wide receiver.
- noting the part of the sea beyond headlands or enclosing areas of land:to sail on the open seas.
- free of ice, as a body of water or a seaport.
- free of navigational hazards:an open coast.
- (of a seaport) available for foreign trade;
not closed by government regulations or by considerations of health.
- (of a microphone) in operation;
- (of a delimiting punctuation mark) occurring at the beginning of a group of words or characters that is set off, as from surrounding text:open parenthesis; open quotes.Cf. close (def. 56).
- not yet balanced or adjusted, as an account.
- Physiologynot constipated, as the bowels.
- (of a vowel) articulated with a relatively large opening above the tongue or with a relatively large oral aperture, as the vowel sound of cot compared with that in caught.
- (of a syllable) ending with a vowel.
- (of a consonant) continuant (opposed to stopped).
- Oceanography, Linguistics[Ling.](of a class of items) readily admitting new members, as the class of nouns, verbs, or adjectives (opposed to closed).
- Printing(of type) in outline form.
- Printingwidely spaced or leaded, as printed matter.
- Music and Dance
- (of an organ pipe) not closed at the far end.
- (of a string) not stopped by a finger.
- (of a note) produced by such a pipe or string or, on a wind instrument, without the aid of a slide, key, etc.
- (of an interval) containing neither endpoint.
- (of a set) consisting of points having neighborhoods wholly contained in the set, as the set of points within a circle.
- Mathematics(of a map from one topological space to another) having the property that the image of an open set is an open set.
- free from frost;
mild or moderate:an open winter.
- Animal Husbandry(of a female animal) not pregnant.
- Textiles(of a fabric or weave) so loosely woven that spaces are visible between warp and filling yarns.
- to move (a door, window sash, etc.) from a shut or closed position so as to admit of passage.
- to render (a doorway, gateway, window, etc.) unobstructed by moving a door, window sash, etc., away from it.
- to render the interior of (a box, drawer, etc.) readily accessible.
- to clear (a passage, channel, etc.) of obstructions.
- to clear (areas or passages in the body).
- to give access to;
make accessible or available, as for use:to open a port for trade.
- to establish for business purposes or for public use:to open an office.
- to set in action, begin, start, or commence (sometimes fol. by up):to open a campaign.
- to uncover, lay bare, or expose to view.
- to expand, unfold, or spread out:to open a map.
- to make less compact, less closely spaced, or the like:to open ranks.
- to disclose, reveal, or divulge.
- to render accessible to knowledge, enlightenment, sympathy, etc.:to open one's mind.
- to cut, blast, or break into:to open a safe with nitro.
- to make or produce (an opening) by cutting or breaking, or by pushing aside or removing obstructions:to open a way through a crowd.
- to make an incision or opening in:to open a boil.
- Lawto recall or revoke (a judgment, decree, etc.) for the purpose of allowing further contest or delay.
- Lawto make the first statement of (a case) to the court or jury.
- Games[Cards.]to begin a hand by making (the first bid), placing (the first bet), or playing (a given card or suit) as the lead.
- Nautical, Naval Termsto sail (a course) so that the apparent location of a distant fixed object changes with relation to a nearer fixed object (sometimes fol. by out).
- to become open, as a door, building, box, or enclosure.
- to afford access:a door that opens into a garden.
- to have an opening, passage, or outlet:The room opens into a corridor.
- (of a building, theater, etc.) to open its doors to the public:The museum opens at one o'clock.
- to begin a session or term, as a school.
- to begin a season, series of performances, or tour, as a theatrical company:The play will open in Boston.
- to begin, start, or commence an activity:The game opened with the national anthem.
- to part, or seem to part, so as to allow or reveal a passage:At last the cliffs opened to show us that we were heading for the sea.
- to become disclosed or revealed.
- to come into view;
become more visible or plain.
- to become receptive to knowledge, sympathy, etc., as the mind.
- to disclose or reveal one's knowledge, thoughts, feelings, etc.
- to unfold or expand, as a blossom, so as to reveal the interior.
- to spread out or expand, as the hand or a fan.
- to spread apart or separate, as pages of a book, newspaper, etc.:Open to page 32.
- to spread or come apart;
burst:The wound opened.
- to become less compact, less closely spaced, or the like:The ranks began to open.
- Games[Cards.]to make the first bet, bid, or lead in beginning a hand.
- Sport[Hunting.](of hounds) to begin to bark, as on the scent of game.
- Idiomsopen up:
- to become or make open.
- to expand, esp. before the eye:A breathtaking panorama opened up as we reached the top of the hill.
- to achieve the initial development of:to open up a business office; to open up trade with China.
- [Slang.]to increase speed or the speed of (a vehicle).
- an open or clear space.
- the open air.
- the open water, as of the sea.
- an opening or aperture.
- an opening or opportunity.
- Sporta contest or tournament in which both amateurs and professionals may compete, esp. in golf and tennis.
- Sportthe open:
- the unenclosed or unobstructed country.
- the outdoors:Vacations in the open are fine for the entire family.
- the condition of being unconcealed, recognized, or publicly known:The scandal is now out in the open.
- bef. 900; (adjective, adjectival) Middle English, Old English; cognate with Old Saxon opan (Dutch open), Old High German offan (German offen), Old Norse opinn, akin to up; (verb, verbal) Middle English openen, Old English openian; cognate with Old Saxon opanon (Dutch openen), Old High German offanōn (German öffnen)
- 21.See corresponding entry in Unabridged See frank 1.
Collins Concise English Dictionary © HarperCollins Publishers::
open /ˈəʊpən/ adj
- not closed or barred
- affording free passage, access, view, etc; not blocked or obstructed
- not sealed, fastened, or wrapped
- having the interior part accessible: an open drawer
- extended, expanded, or unfolded: an open newspaper, an open flower
- ready for business
- able to be obtained; available: the position advertised last week is no longer open
- unobstructed by buildings, trees, etc: open countryside
- free to all to join, enter, use, visit, etc: an open competition
- unengaged or unoccupied: the doctor has an hour open for you to call
- See open season
- not decided or finalized: an open question
- ready to entertain new ideas; not biased or prejudiced: an open mind
- extended or eager to receive (esp in the phrase with open arms)
- exposed to view; blatant: open disregard of the law
- liable or susceptible: you will leave yourself open to attack if you speak
- (of climate or seasons) free from frost; mild
- free from navigational hazards, such as ice, sunken ships, etc
- having large or numerous spacing or apertures: open ranks
- full of small openings or gaps; porous: an open texture
- (of a violin or guitar string) not stopped with the finger
- (of a pipe, such as an organ pipe) not closed at either end
- (of a note) played on such a string or pipe
- in operation; active: an open account
- unrestricted; unlimited: open credit, open insurance cover
- See open cheque
- (of a return ticket) not specifying a date for travel
- (of a goal, court, etc) unguarded or relatively unprotected
- (of a wound) exposed to the air
- (esp of the large intestine) free from obstruction
- undefended and of no military significance: an open city
- denoting a vowel pronounced with the lips relatively wide apart
- denoting a syllable that does not end in a consonant, as in pa
- (of a set) containing points whose neighbourhood consists of other points of the same set: points inside a circle are an open set
- (of software or a computer system) designed to an internationally agreed standard in order to allow communication between computers, irrespective of size, maufacturer, etc
- to move or cause to move from a closed or fastened position: to open a window
- when intr, followed by on or onto: to render, be, or become accessible or unobstructed: to open a road, to open a parcel, the door opens into the hall
- (intransitive) to come into or appear in view: the lake opened before us
- to extend or unfold or cause to extend or unfold: to open a newspaper
- to disclose or uncover or be disclosed or uncovered: to open one's heart
- to cause (the mind) to become receptive or (of the mind) to become receptive
- to operate or cause to operate: to open a shop
- when intr, sometimes followed by out: to make or become less compact or dense in structure: to open ranks
- to set or be set in action; start: to open a discussion, to open the batting
- (transitive) to arrange for (a bank account, savings account, etc) usually by making an initial deposit
- to turn to a specified point in (a book, magazine, etc): open at page one
- to make the opening statement in (a case before a court of law)
- (intransitive) to bet, bid, or lead first on a hand
See also open upEtymology: Old English; related to Old French open, epen, Old Saxon opan, Old High German offanˈopenable adj ˈopenly adv ˈopenness n
- the open ⇒ any wide or unobstructed space or expanse, esp of land or water
- See open air
- a competition which anyone may enter
- bring into the open ⇒ to make evident or public
- come into the open ⇒ to become) evident or public
'opened' also found in these entries (note: many are not synonyms or translations):