RECIPROCA'TION, noun [Latin reciprocatio.] 1. Interchange of acts; a mutual giving and returning; as the reciprocation of kindnesses. 2. Alternation; as the reciprocation of the sea in the flow and ebb of tides. 3. Regular return or alternation of two symptoms or diseases.
Source: Webster's 1828 American Dictionary ↗ · public-domain · returned verbatim, no AI