Noun
1. communication by the exchange of letters
2. compatibility of observations;
"there was no agreement between theory and measurement""the results of two tests were in correspondence"3. the relation of correspondence in degree or size or amount
4. a function such that for every element of one set there is a unique element of another set
5. communication by exchange of letters
6. (mathematics) an attribute of a shape or relation; exact correspondence of form on opposite sides of a dividing line or plane
7. similarity by virtue of correspondence