n. & adj.
n. (pl. -ies) 1 a a proposition that follows from (and is often appended to) one already proved. b an immediate deduction. 2 (often foll. by of) a natural consequence or result.
adj. 1 supplementary, associated. 2 (often foll. by to) forming a corollary.
[ ME f. L corollarium money paid for a garland, gratuity: neut. adj. f. COROLLA ]