correspondence

英[kɒrɪ'spɒnd(ə)ns] 美[,kɔrə'spɑndəns]

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