Definition of release noun from the Oxford Advanced Learner's Dictionary

release

noun

rɪˈliːs

rɪˈliːs

setting somebody/something free

1 [uncountable, singular] release (of somebody) (from something) the act of setting a person or an animal free; the state of being set freeThe government has been working to secure the release of the hostages.She can expect an early release from prison.

making something available

2 [uncountable, singular] the act of making something available to the publicThe new software is planned for release in April.The movie goes on general release (= will be widely shown in cinemas/movie theaters) next week.

3 [countable] a thing that is made available to the public, especially a new CD or film/moviethe latest new releases

of gas/chemical

4 [uncountable, countable] the act of letting a gas, chemical, etc. come out of the container where it has been safely heldthe release of carbon dioxide into the atmosphereto monitor radiation releases

from unpleasant feeling

5 [uncountable, singular] the feeling that you are free from pain, anxiety or some other unpleasant feelinga sense of release after the examI think her death was a merciful release.It's just a release of tension.