1. a proposition that follows from (and is often appended to) one already proved.
▪ a direct or natural consequence or result:"the huge increases in unemployment were the corollary of expenditure cuts"
adjective
1. forming a proposition that follows from one already proved.
▪ associated or supplementary:"the court did not answer a corollary question"
Word Originlate Middle English: from Latin corollarium ‘money paid for a garland or chaplet; gratuity’ (in late Latin ‘deduction’), from corolla, diminutive of corona ‘wreath, crown, chaplet’.