An Etymological Dictionary of Astronomy and Astrophysics

To be in agreement, harmony, or conformity; to be similar or equivalent in character, quantity, origin, structure, or function.

Etymology (EN): From O.Fr. Fr. correspondre, from M.L. correspondere
from cor-, → com-, + respondere “to answer,” → response.

Etymology (PE): Hampatvâzidan, from ham-, → com-, + patvâz “response” [Mo’in], from Mid.Pers. patvâc “response,”
Av. paitivak- + -idan infinitive suffix.