Definition of "preview"

preview

/ˈpɹiːvjuː/

noun
plural previews
1. An experience of something in advance.
  Quotations
  It is tempting to speculate about the incentives or compulsions that might explain why anyone would take to the skies in [the] basket [of a balloon]: perhaps out of a desire to escape the gravity of this world or to get a preview of the next; […].
  2013 June 7, David Simpson, “Fantasy of navigation”, in The Guardian Weekly, volume 188, number 26, page 36
2. (colloquial) An advance showing of a film, exhibition etc.
3. Something seen in advance.
4. (computing) a facility for seeing and checking a document or photo, or changes to it, before saving and/or printing it.
verb
third-person singular simple present previews, present participle previewing, simple past and past participle previewed
1. To show or watch something, or part of it, before it is complete.
2. (computing) To show something in advance, a facility for seeing and checking a document or photo, or changes to it, before saving and/or printing it.