To be in the same or an analogous relation to one set of objects that something else is to another set of objects; to be, as an individual of a collection, related to an individual of another collection by some mode of relation in which the members of the first collection generally are related to those of the second: followed by to.More generally In mathematics, to be, as an individual of a set, related to an individual of another (or the same) set in a way in which every individual of the first set is related to a definite number of individuals of the second set, and in which a definite number of individuals of the first set is related to each individual of the second set.To be in conformity or agreement; have an answering form or nature; be reciprocally adapted or complementary; agree; match; fit: used absolutely or followed by with or to: as, his words and actions do not correspond; the promise and the performance do not correspond with each other; his expenditures do not correspond to his income.To communicate by means of letters sent and received; hold intercourse with a person at a distance by sending and receiving letters: absolutely or followed by with.To hold communion: followed by with.Synonyms (Of correspond to.) To suit, answer to, accord with, harmonize with, tally with, comport with.