The meaning of OPEN is having no enclosing or confining barrier : accessible on all or nearly all sides. How to use open in a sentence. Synonym Discussion of Open.

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OPEN definition: 1. not closed or fastened: 2. ready to be used or ready to provide a service: 3. not closed in or…. Learn more.

Open definition: not closed or barred at the time, as a doorway by a door, a window by a sash, or a gateway by a gate.. See examples of OPEN used in a sentence.

Affording unobstructed entrance and exit; not shut or closed. b. Affording unobstructed passage or view: open waters; the open countryside. 2. a. Having no protecting or concealing cover: an …

The adjective open describes something that's not closed or blocked up, like open curtains that provide a view of the garden outside. Open can also refer to something that's unfastened or …

If you open something such as a bottle, box, parcel, or envelope, you move, remove, or cut part of it so you can take out what is inside. I opened the letter.

Explore the official 2025 US Open event schedule and view session and gate opening times. Buy your tickets to experience the year's final Grand Slam.

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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.