Reciprocation

Re*cip`ro*ca"tion (-kā"shŭn), n. [L. reciprocatio: cf. F. réciprocation.] 1. The act of reciprocating; interchange of acts; a mutual giving and returning; as, the reciprocation of kindnesses.

2. Alternate recurrence or action; as, the reciprocation of the sea in the flow and ebb of tides. Sir T. Browne.