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.

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.

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 parted — an open jar of peanut butter, an open eye, or an open book.

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 open wound; an open sports car. b. Completely obvious; blatant: open disregard of the law.

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.

If you say that a fact or question is open to debate, interpretation, or discussion, you mean that people are uncertain whether it is true, what it means, or what the answer is.

We have one of the best systems in the country, but we're always open to suggestions. I know it's different, but try to keep an open mind.

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.