open
IPA: ˈoʊpʌn
noun
- (in the definite) Open or unobstructed space; an exposed location.
- (in the definite) Public knowledge or scrutiny; full view.
- (electronics) A defect in an electrical circuit preventing current from flowing.
- A sports event in which anybody can compete.
- The act of something being opened, such as an e-mail message.
verb
- (transitive) To make something accessible or allow for passage by moving from a shut position.
- (transitive) To make (an open space, etc.) by clearing away an obstacle or obstacles, in order to allow for passage, access, or visibility.
- (transitive, intransitive, engineering, gas and liquid flow, of valve or damper) To move to a position allowing fluid to flow.
- (transitive, intransitive, electricity, of a switch, fuse or circuit breaker) To move to a position preventing electricity from flowing.
- (Manglish, Philippines) To turn on; to switch on.
- (transitive) To bring up, broach.
- (transitive) To enter upon, begin.
- (transitive) To spread; to expand into an open or loose position.
- (transitive) To make accessible to customers or clients.
- (transitive) To start (a campaign).
- (intransitive) To become open.
- (intransitive) To begin conducting business.
- (intransitive, cricket) To begin a side's innings as one of the first two batsmen.
- (intransitive, poker) To bet before any other player has in a particular betting round in a game of poker.
- (transitive, intransitive, poker) To reveal one's hand.
- (computing, transitive, intransitive) To connect to a resource (a file, document, etc.) for viewing or editing.
- (transitive, nursing) To make (a bed) ready for a patient by folding back the bedcovers.
- (obsolete) To disclose; to reveal; to interpret; to explain.
adjective
- (usually not comparable) Not closed.
- Able to be accessed (physically).
- Able to have something pass through or along it.
- (of a body part) Not covered; showing what is inside.
- (of a sandwich, etc.) Composed of a single slice of bread with a topping.
- Not physically drawn together, closed, folded or contracted; extended.
- (not comparable) Actively conducting or prepared to conduct business.
- (comparable) Receptive.
- (not comparable) Public
- (not comparable) With open access, of open science, or both.
- (not comparable) Candid, ingenuous, not subtle in character.
- (now regional) Mild (of the weather); free from frost or snow.
- (mathematics, logic, of a formula) Having a free variable.
- (mathematics, topology, of a set) Which is part of a predefined collection of subsets of X, that defines a topological space on X.
- (graph theory, of a walk) Whose first and last vertices are different.
- (computing, not comparable, of a file, document, etc.) In current use; connected to as a resource.
- (engineering, gas and liquid flow, of valve or damper) To be in a position allowing fluid to flow.
- (electricity, of a switch or circuit breaker) To be in a position preventing electricity from flowing.
- (sometimes business) Not fulfilled or resolved; incomplete.
- Not settled or adjusted; not decided or determined; not closed or withdrawn from consideration.
- (music, stringed instruments) Of a note, played without pressing the string against the fingerboard.
- (music) Of a note, played without closing any finger-hole, key or valve.
- Not of a quality to prevent communication, as by closing waterways, blocking roads, etc.; hence, not frosty or inclement; mild; used of the weather or the climate.
- (law, of correspondence) Written or sent with the intention that it may made public or referred to at any trial, rather than by way of confidential private negotiation for a settlement.
- (phonetics) Uttered with a relatively wide opening of the articulating organs; said of vowels.
- (phonetics) Uttered, as a consonant, with the oral passage simply narrowed without closure.
- (phonetics, of a syllable) That ends in a vowel; not having a coda.
- (computing, education) Made public, usable with a free licence and without proprietary components.
- (medicine) Resulting from an incision, puncture or any other process by which the skin no longer protects an internal part of the body.
- (computing, used before "code") Source code of a computer program that is not within the text of a macro being generated.
- (of a multi-word compound) Having component words separated by spaces, as opposed to being joined together or hyphenated; for example, time slot as opposed to timeslot or time-slot.
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Examples of "open" in Sentences
- I opened the window.
- I open the door and leave the tray.
- She opens the door and falls asleep.
- I open the folder and it closes the window.
- Jerry opens the door of the basement stairway.
- The hand that turneth the knob, opens the door.
- Door of repentance remains open for the Mushrikeen.
- Open the door and you will be in a spiraling corridor.
- The switch controls the opening and closing of the door.
- Part of the room is the opening provided by the dormer window.
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