1. (

• correspondence

) communication by the exchange of letters ;

2. (

• agreement ,
• correspondence ,

) compatibility of observations; "there was no agreement between theory and measurement"; "the results of two tests were in correspondence" ;

3. (

• commensurateness ,
• correspondence ,
• proportionateness

) the relation of corresponding in degree or size or amount ;

4. (

• symmetry ,
• symmetricalness ,
• correspondence ,
• balance ,

) (mathematics) an attribute of a shape or relation; exact reflection of form on opposite sides of a dividing line or plane ;

5. (

• parallelism ,
• correspondence ,

) similarity by virtue of corresponding ;