/kong"grooh euhns, keuhn grooh"-, keuhng-/ , n.
1. the quality or state of agreeing or corresponding.
2. Math. a relation between two numbers indicating that the numbers give the same remainder when divided by some given number. Cf. residue (def. 4b).
[ 1400-50; late ME congruentia, deriv. of congruent- CONGRUENT; see -ENCE ]