1.communication by the exchange of letters
2.compatibility of observations;
there was no agreement between theory and measurement
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