[ kawr-uh-ler-ee, kor-; especially British, kuh-rol-uh-ree ]
See synonyms for corollary on
noun,plural cor·ol·lar·ies.
  1. Mathematics. a proposition that is incidentally proved in proving another proposition.

  2. an immediate consequence or easily drawn conclusion.

  1. a natural consequence or result.

Origin of corollary

1325–75; Middle English <Late Latin corollārium corollary, in Latin: money paid for a garland, a gift, gratuity. See corolla, -ary

Words Nearby corollary Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use corollary in a sentence

British Dictionary definitions for corollary


/ (kəˈrɒlərɪ) /

nounplural -laries
  1. a proposition that follows directly from the proof of another proposition

  2. an obvious deduction

  1. a natural consequence or result

  1. consequent or resultant

Origin of corollary

C14: from Latin corollārium money paid for a garland, from Latin corolla garland, from corōna crown

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Scientific definitions for corollary


[ kôrə-lĕr′ē ]

  1. A statement that follows with little or no proof required from an already proven statement. For example, it is a theorem in geometry that the angles opposite two congruent sides of a triangle are also congruent. A corollary to that statement is that an equilateral triangle is also equiangular.

The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.