n.1 a thing that is known to have occurred, to exist, or to be true.
2 a datum of experience (often foll. by an explanatory clause or phrase : the fact that fire burns; the fact of my having seen them).
3 (usu. in pl.) an item of verified information; a piece of evidence.
4 truth, reality.
5 a thing assumed as the basis for argument or inference.
Phrases and idioms:
before (or after) the fact before (or after) the committing of a crime. a fact of life something that must be accepted. facts and figures precise details. fact-sheet a paper setting out relevant information. the facts of life information about sexual functions and practices. in (or in point of) fact
1. in reality; as a matter of fact.
2 (in summarizing) in short.
Etymology: L factum f. facere do