Merriam-Webster Collegiate Dictionary - corresponding

 adjective  Date: 1579  1.  a. having or participating in the same relationship (as kind, degree, position, correspondence, or function) especially with regard to the same or like wholes (as geometric figures or sets) ~ parts of similar triangles  b. related, accompanying all rights carry with them ~ responsibilities — W. P. Paepcke  2.  a. charged with the duty of writing letters ~ secretary  b. participating or serving at a distance and by mail a ~ member of the society  • ~ly adverb