corollary meaning
Freebase (0.00 / 0 votes) Rate this definition: Corollary. A corollary is a statement that follows readily from a previous statement. In mathematics a corollary typically follows a theorem. The use of the term corollary, rather than proposition or theorem, is intrinsically subjective. Proposition B is a corollary of proposition A if B can readily be deduced from A or is self-evident from its proof, but the meaning of readily or self-evident varies depending upon the author and context.