[ kong-groo-uhnt, kuhn-groo-, kuhng- ]
See synonyms for congruent on
  1. agreeing; accordant; congruous: His testimony was perfectly congruent with the content retrieved from the suspect’s phone.

  2. Mathematics. of or relating to two numbers related by a congruence.

  1. Geometry. (of figures) coinciding at all points when superimposed: congruent triangles.

  2. Chemistry. (of a substance or compound) not undergoing a change in composition when undergoing a reaction, as with congruent melting.

Origin of congruent

First recorded in 1425–75; late Middle English, from Latin congruent- (stem of congruēns, present participle of congruere “to come together, fit in, agree”), equivalent to con- prefix meaning “together” + -gru- base of uncertain meaning (attested only in this verb and ingruere “to fall upon”) + -ent- participle ending; see con-, -ent

Other words from congruent

  • con·gru·ent·ly, adverb
  • non·con·gru·ent, adjective
  • non·con·gru·ent·ly, adverb

Words that may be confused with congruent

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

How to use congruent in a sentence

British Dictionary definitions for congruent


/ (ˈkɒŋɡrʊənt) /

  1. agreeing; corresponding; congruous

  2. having identical shapes so that all parts correspond: congruent triangles Compare similar (def. 2)

  1. of or concerning two integers related by a congruence

Origin of congruent

C15: from Latin congruere to meet together, agree

Derived forms of congruent

  • congruently, adverb

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 congruent


[ kŏnggrōō-ənt, kən-grōōənt ]

  1. Relating to geometric figures that have the same size and shape. Two triangles are congruent, for example, if their sides are of the same length and their internal angles are of the same measure.

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