American Heritage® Dictionary of the English Language, Fourth Edition
- adj. Affording unobstructed entrance and exit; not shut or closed.
- adj. Affording unobstructed passage or view: open waters; the open countryside.
- adj. Having no protecting or concealing cover: an open wound; an open sports car.
- adj. Completely obvious; blatant: open disregard of the law.
- adj. Carried on in full view: open warfare; open family strife.
- adj. Sports Not closely defended by an opponent: an open receiver.
- adj. Not sealed or tied: an open package.
- adj. Spread out; unfolded: an open book.
- adj. Having interspersed gaps, spaces, or intervals: open ranks; an open weave.
- adj. Accessible to all; unrestricted as to participants: an open competition.
- adj. Free from limitations, boundaries, or restrictions: open registration.
- adj. Enterable by registered voters regardless of political affiliation: an open primary.
- adj. Computer Science Of or relating to a file that can be accessed.
- adj. Lacking effective regulation: an open town in which gambling predominated.
- adj. Not legally repressed: open drug trafficking.
- adj. Susceptible; vulnerable: open to interpretation; an issue that is open to question.
- adj. Willing to consider or deal with something: open to suggestions.
- adj. Available; obtainable: The job is still open.
- adj. Available for use: an open account; the only course open to us.
- adj. Ready to transact business: The store is open.
- adj. Not engaged or filled: has an open hour for emergency cases.
- adj. Not yet decided; subject to further thought: an open question.
- adj. Characterized by lack of pretense or reserve; candid: Please be open with me. See Synonyms at frank1.
- adj. Free of prejudice; receptive to new ideas and arguments: She listened to the proposal with an open mind.
- adj. Generous: He is very open with his time.
- adj. Printing Widely spaced or leaded. Used of typeset or other printed matter.
- adj. Printing Having constituent elements separated by a space in writing or printing: The word sea horse is an open compound.
- adj. Music Not stopped by a finger. Used of a string or hole of an instrument.
- adj. Music Produced by an unstopped string or hole or without the use of slides, valves, or keys: an open note on a trumpet.
- adj. Music Played without a mute: an open wind instrument.
- adj. Linguistics Articulated with the tongue in a low position, as the vowel in far.
- adj. Linguistics Ending in a vowel or diphthong: an open syllable.
- adj. Designating a method of punctuation in which commas and other marks are used sparingly.
- adj. Being in operation; live: an open microphone.
- adj. New England Clear. Used of weather. See Regional Note at fair1.
- adj. Electricity Containing a gap across which electricity cannot pass: an open circuit.
- adj. Mathematics Of or relating to an interval containing neither of its endpoints.
- adj. Mathematics Of or being a set such that at least one neighborhood of every point in the set is within the set.
- adj. Mathematics Of or being a set that is the complement of a closed set.
- adj. Sports Having the forward foot farther from the intended point of impact with the ball than the rear foot: an open batting stance.
- adj. Sports Held or swung with the top or outer edge of the striking face pointing slightly farther away from the objective than the lower or inner edge: The club struck the ball with an open face, causing a slice.
- adj. Physics Of or relating to a model of the universe in which there is not sufficient matter to halt its expansion.
- v. To release from a closed or fastened position.
- v. To remove obstructions from; clear.
- v. To make or force an opening in: open an old wound.
- v. To form spaces or gaps between: soldiers opening ranks.
- v. To break the continuity of; make a gap in: open a circuit.
- v. To remove the cover, cork, or lid from.
- v. To remove the wrapping from; undo.
- v. To unfold so that the inner parts are displayed; spread out: open a newspaper.
- v. To get (something) going; initiate: open a campaign.
- v. To commence the operation of: open a new business.
- v. Games To begin (the action in a game of cards) by making the first bid, placing the first bet, or playing the first lead.
- v. To make available for use: opened the area to commercial development; opened the computer file and retrieved some data.
- v. To make more responsive or understanding.
- v. To reveal the secrets of; bare.
- v. Sports To modify (one's stance), as in baseball or golf, so that it is open.
- v. Law To recall (an order or judgment) for a reexamination of its merits.
- v. To become open: The door opened slowly.
- v. To draw apart; separate: The wound opened under pressure.
- v. To spread apart; unfold.
- v. To come into view; become revealed: The plain opened before us.
- v. To become receptive or understanding.
- v. To begin; commence: The meeting opened with a call to order.
- v. To begin business or operation: The store opens early on Saturday.
- v. To be performed, shown, or made available to the public for the first time: The play opens next week.
- v. To be priced or listed at a specified amount when trading begins: Shares opened high and fell sharply.
- v. Games To make a bid, bet, or lead in starting a game of cards.
- v. To give access: The room opens onto a terrace.
- n. An unobstructed area of land or water.
- n. The outdoors: camping in the open.
- n. An undisguised or unconcealed state: brought the problem out into the open.
- n. A tournament or contest in which both professional and amateur players may participate.
- open up To spread out; unfold: A green valley opened up before us.
- open up To begin operation: The new store opens up next month.
- open up To begin firing: The artillery opened up at dawn.
- open up Informal To speak freely and candidly: At last the frightened witness opened up and told the truth.
- open up To make an opening in by cutting: The surgeon opened up the patient's chest.
- open up To make available or accessible: open up new markets.
- open up Informal To accelerate. Used of a motor vehicle.
- idiom. open fire To begin firing on.
- idiom. open (one's) eyes To become aware of the truth of a situation.
Century Dictionary and Cyclopedia
- Unclosed, literally or figuratively; not shut or closed; hence, affording access, or free ingress and egress: as, an open door.
- Unstopped: as, an open bottle.
- Unsealed: as, an open letter.
- Uncovered: as, an open jar; an open drain.
- Without deck: as, an open boat.
- Without protecting barrier of any kind: as, an open harbor or roadstead; an open gallery.
- Exposed; liable; subject.
- Free from or without physical hindrance or impediment; clear; hence, free of access; affording free passage; as, the river is now open for navigation.
- Unfilled; unoccupied: as, the appointment is still open.
- Undecided; unsettled or undetermined: as, an open question.
- Not yet balanced or adjusted; not yet closed or wound up; subject to further additions: as, an open account or policy.
- At liberty; free; as yet disengaged; not preoccupied or prepossessed; not forestalled; available: as, an open day; open to engagements.
- Presenting no moral or logical hindrance or difficulty; morally or logically possible.
- Unrestricted; public; free to be used or enjoyed by all: as, open market; open competition.
- Uninclosed; not inclosed or surrounded by barriers; accessible on all or nearly all sides; affording free ingress or access on all sides or on more sides than one: as, the open country; an open space; the open sea.
- Hence — Not shut off or obstructed; unobstructed; free; clear: as, the open air; an open view; open day.
- Not obstructed by ice or frost; clear of ice: as, open water in the polar seas; hence, as applied to weather or the seasons, not marked by ice and snow; mild; moderate: as, open weather.
- Not drawn, folded, or rolled together; unclosed; unfolded; expanded; spread out; parted; apart: as, an open hand; an open flower; in open order.
- Hence Free in giving or communicating; liberal; generous; bounteous.
- Containing apertures; perforated; of a loose texture: as, open work.
- Not concealed; plain in the sight of all; exposed to view: as, open shame.
- Free from concealment, dissimulation, reserve, or disguise; not secret or secretive; plain and aboveboard; candid; frank; free-spoken; ingenuous: as, an open face; an open avowal; an open enemy; open defiance.
- Ready (to hear, do, see, or receive anything); attentive; receptive; amenable, as to reason, advice, influence, pity, etc.
- In music. See open diapason, open harmony, open string, etc., under the nouns.
- Uttered with an unclosed or a less closed position of the mouth-organs: as, a sibilant is a more open sound than a mute; a vowel is more open than a consonant; open and close e.
- Not closed by a consonant: said of a vowel, or a syllable ending in a vowel, upon which another vowel follows.
- In electricity, not forming a part of a closed circuit; not connected with other wires or with the earth so as to form a complete electric circuit.
- In chemical and other industries, a term applied to steam admitted directly into a tank or vessel, and acting directly upon substances to be treated, as fabrics or yarns in dyeing, or materials in soap-making. Also called
wet-steam, because as soon as admitted it begins to condense, and thus always holds in suspension a considerable percentage of water.
- A badge or ornament resembling a coronet set upon the left shoulder or planted on the left breast of English effigies of the fifteenth and sixteenth centuries. It is thought to have been the indication of some rank or office, as that of yeoman of the crown, but this has not been verified.
- To be very hospitable; entertain many friends.
- Synonyms and Uncovered, unprotected, exposed, obvious, public. Frank, Ingenuous, etc. (see candid), unreserved, undissembling, artless, guileless.
- n. An open or clear space.
- n. The open air.
- To make open; cause to be open; unlock, unfasten, or draw apart or aside, and thus afford access or egress, or a view of the interior parts; make accessible or visible by removing or putting or pushing aside whatever blocks the way or the view; unclose.
- To form by cutting, cleaving, removing, or pushing aside whatever impedes or hinders: as, to open a way, road, or path through the woods; to open a hole or breach in the enemy's walls.
- To pierce or cut into, and lay bare or make accessible: as, to open an animal; to open a wound.
- To spread out; expand; unclose; unroll; unfold; extend: as, to open one's hand, a book, or a fan; to open ranks.
- To lay bare; expose; exhibit; reveal; disclose: as, to open one's mind freely to a friend; to open one's grief or one's plans.
- To unfold; expound; explain; interpret: as, to open a text.
- To expand or enlighten; enlarge; make receptive; render accessible to wisdom, knowledge, enlightenment, improvement, or new influences.
- To render accessible or available for settlement, use, intercourse, etc.: as, to open land; to open a country to trade: sometimes with up: as, to open up trade.
- To discover; come into view of.
- To set in action; start; initiate; commence: as, to open a public assembly, a session of Congress, or Parliament; to open an exhibition; to open a shop; to open a correspondence, a discussion, a negotiation, proceedings, etc.
- To shuck or shell; remove the shell or husk from the meat or the fruit of, as an oyster; cut out.
- In law: To state (the case) to the court or jury, preliminary to adducing evidence; more specifically, to make the first statement for this purpose, and give evidence under it, before the adversary is allowed to do so.
- To recall or revoke, as a judgment or decree, for the purpose of allowing further contest or delay.
- In malting, to shovel up the edges and throw a portion of (the couched grain) toward the center of the couch, distributing it in such a manner as to leave a somewhat greater depth of grain at the edges than at the center of the couch. See malting and couch, 5.
- Specifically, to loosen the consistency or texture of; give a freer or less dense consistency or texture to.
- Synonyms To uncover.
- To exhibit, make manifest.
- To unclose; be opened or become open.
- To afford access, entrance, egress, or view: as, a gate opened on the lane.
- To burst open; become parted, ruptured, or broken; gape.
- To burst and unfold; spread out or expand, as a bud or flower.
- To become expanded or enlightened; become receptive or ready to receive.
- To begin; commence: as, sales opened at par; the exhibition opened yesterday; the story opens well. Often used elliptically, an object being understood: as, we opened on the enemy at once (that is, opened fire, or began the attack at once); he opened on him with vigor (that is, began to attack him with vigor).
- To begin to appear; become more distinct; expand before the eye on nearer approach or favorable change of position; become more visible or plain as position changes: as, the harbor opened to our view.
- In hunting, to begin to bark on view or scent of the game.
- To yield or make (a certain quantity) when opened: said of oysters: as, to open well or badly; to open (at the rate of) six quarts per bushel.
- In printing, said of a composition in type that is wide-leaded or with excess of quadrats or other blanking-out material, known to compositors as ‘fat matter.’
- n. An opening; a hole; the widening of a river at its mouth: as, the open of Humber; a gap in sand-dunes through which a road can pass.
- n. An opportunity; an opening; a chance.
- Nautical, to appear to separate and become distinct, as lights in a harbor when the vessel nears.
- adj. not comparable Which is not closed; accessible; unimpeded; as, an open gate.
- adj. not comparable Actively conducting or prepared to conduct business.
- adj. comparable Receptive.
- adj. not comparable Public; as, an open letter, an open declaration.
- adj. not comparable Candid, ingenuous, not subtle in character:
- adj. mathematics, logic Having a free variable.
- adj. mathematics, topology, of a set Which is part of a predefined collection of subsets of , that defines a topological space on .
- adj. computing, not comparable, of a file, etc. In current use; mapped to part of memory.
- adj. business Not fulfilled.
- adj. music without any fingers pressing the string against the fingerboard
- v. transitive To make something accessible or removing an obstacle to something being accessible.
- v. transitive To bring up (a topic).
- v. transitive To make accessible to customers or clients.
- v. transitive To start (a campaign).
- v. intransitive To become open.
- v. intransitive To begin conducting business.
- v. intransitive, cricket To begin a side's innings as one of the first two batsmen.
- v. intransitive, poker To bet before any other player has in a particular betting round in a game of poker.
- v. transitive, intransitive, poker To reveal one's hand.
- v. computing, transitive, intransitive, of a file, etc. To load into memory for viewing or editing.
- n. A sports event in which anybody can contest; as, the Australian Open.
- n. electronics a wire that is broken midway.
- n. with the Open or unobstructed space; an exposed location.
- n. with the Public knowledge or scrutiny; full view.
GNU Webster's 1913
- adj. Free of access; not shut up; not closed; affording unobstructed ingress or egress; not impeding or preventing passage; not locked up or covered over; -- applied to passageways; ; also, to inclosed structures or objects; ; also, to means of communication or approach by water or land.
- adj. Free to be used, enjoyed, visited, or the like; not private; public; unrestricted in use; ; liable to the approach, trespass, or attack of any one; unprotected; exposed.
- adj. Free or cleared of obstruction to progress or to view; accessible.
- adj. Not drawn together, closed, or contracted; extended; expanded.
- adj. Without reserve or false pretense; sincere; characterized by sincerity; unfeigned; frank; also, generous; liberal; bounteous; -- applied to personal appearance, or character, and to the expression of thought and feeling, etc.
- adj. Not concealed or secret; not hidden or disguised; exposed to view or to knowledge; revealed; apparent.
- adj. Not of a quality to prevent communication, as by closing water ways, blocking roads, etc.; hence, not frosty or inclement; mild; -- used of the weather or the climate
- adj. Not settled or adjusted; not decided or determined; not closed or withdrawn from consideration
- adj. Free; disengaged; unappropriated.
- adj. Uttered with a relatively wide opening of the articulating organs; -- said of vowels.
- adj. Uttered, as a consonant, with the oral passage simply narrowed without closure, as in uttering
- adj. Not closed or stopped with the finger; -- said of the string of an instrument, as of a violin, when it is allowed to vibrate throughout its whole length.
- adj. Produced by an open string.
- n. Open or unobstructed space; clear land, without trees or obstructions; open ocean; open water.
- v. To make or set open; to render free of access; to unclose; to unbar; to unlock; to remove any fastening or covering from
- v. To spread; to expand.
- v. To disclose; to reveal; to interpret; to explain.
- v. To make known; to discover; also, to render available or accessible for settlements, trade, etc.
- v. To enter upon; to begin
- v. To loosen or make less compact.
- v. To unclose; to form a hole, breach, or gap; to be unclosed; to be parted.
- v. To expand; to spread out; to be disclosed.
- v. To begin; to commence
- v. (Sporting) To bark on scent or view of the game.
- n. a clear or unobstructed space or expanse of land or water
- adj. affording free passage or access
- Old English open, from Proto-Germanic *upanaz (compare Old High German offan ("open")), from Proto-Indo-European *upo "up from under, over". Cognate with German offen, Low German apen, Icelandic opna, Norwegian åpne and Swedish öppen. Non-Germanic cognates include Albanian hap ("to open"). (Wiktionary)
- Middle English, from Old English. (American Heritage® Dictionary of the English Language, Fourth Edition)
“When Jesus said that heaven would be opened, He meant not only opened just once, but _remaining open_; so that ever since Christ ascended into heaven we have lived and are still living under an "open heaven," which means free intercourse between God and man, because Christ Himself is the”
“And if the parasite can, as some of our peasants believe, open all locks, why should it not have served as an open Sesame in the hands of Aeneas to unlock the gates of death?”
“In a flute, open at both ends, the holes are so arranged that the length of the sound-wave is about one foot, for one of the chief open notes.”
“A desirable rule for the teacher to set for himself would be so to prepare for the recitation by mastery of the subject, and by lesson plan or outline, _that he does not need to have the textbook open before him when the pupils do not also have their books open_.”
“Any method of heating -- open fireplace, stove, hot air, furnace, hot water, or steam -- which will keep a room _with the windows open_ comfortably warm in cold weather is satisfactory and healthful.”
“Oh yes," he said gruffly, "_they're_ open -- they're _open_; though there ain't much going on out-of-doors, being the last night of the season.”
“To open a shop, warehouse, or workhouse on Sunday is a fifty dollar offense, and it is fifty dollars also for doing "any manner of labor, business or work" on Sunday, unless the judge considers it a matter of necessity or charity; nevertheless, the "making of butter and cheese" is good Sunday work, if we do not _open the doors_ which would bring on a $50 fine.”
“A farm house should never be built without an ample, open fireplace in its kitchen, and other _principally_ occupied rooms; and in all rooms where stoves are placed, and fires are daily required, the _open_ Franklin should take place of the close or air-tight stove, unless extraordinary ventilation to such rooms be adopted also.”
“Iëna then went in advance, and sought the open plain, whereupon the child resembling the mother would cry out and complain, because she disliked an _open_ path.”
“Korea Signs 'Open Sky' Agreement with Canada The number of flights to Canada is likely to increase after Korea and Canada reached an open air transportation -- or ¡°open sky¡± -- agreement on Thursday.”
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