Reciprocation
WordNet
noun
(1) Mutual interaction; the activity of reciprocating or exchanging (especially information)
(2) Alternating back-and-forth movement
(3) The act of making or doing something in return
WiktionaryText
Noun
- The act of reciprocating; interchange of acts; a mutual giving and returning; as, the reciprocation of kindness.
- Alternate recurrence or action; as, the reciprocation of the sea in the flow and ebb of tides.