[noun] something (a term or expression or concept) that has a reciprocal relation to something else; "risk is the reciprocal of safety"
[noun] (mathematics) one of a pair of numbers whose product is 1: the reciprocal of 2/3 is 3/2; the multiplicative inverse of 7 is 1/7 Synonyms: multiplicative inverse
[noun] hybridization involving a pair of crosses that reverse the sexes associated with each genotype Synonyms: cross
[adjective] concerning each of two or more persons or things; especially given or done in return; "reciprocal aid"; "reciprocal trade"; "mutual respect"; "reciprocal privileges at other clubs" Synonyms: mutual
[adjective] of or relating to or suggestive of complementation; "interchangeable electric outlets" Synonyms: complementary, interchangeable
[adjective] of or relating to the multiplicative inverse of a quantity or function; "the reciprocal ratio of a:b is b:a"
