Entry 1 sense Webster, 1913 Congruence /kôn'-gro͞o-əns/ · Con·gru·ence · IPA /ˈkɑŋ.ɡɹu.əns/ 01 n. Suitableness of one thing to another; agreement; consistency. 1. Suitableness of one thing to another; agreement; consistency.