Learn how to say Congruences correctly in English with this tutorial pronunciation video.
Oxford dictionary definition of the word congruence:
the quality or state of corresponding, agreeing, or being congruent
(mathematics) the relationship between two integers, x and y, such that their difference, with respect to another positive integer called the modulus, n, is a multiple of the modulus. Usually written x ≡ y (mod n), as in 25 ≡ 11 ( mod 7)