reciprocal
noun
something (a term or expression or concept) that has an inverse relation to something else
“risk is the reciprocal of safety”
(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
Synonymsmultiplicative inversehybridization involving a pair of crosses that reverse the sexes associated with each genotype
Synonymsreciprocal cross
adjective
concerning each of two or more persons or things; especially given or done in return
“reciprocal aid”
“reciprocal trade”
SynonymsmutualOppositesnonreciprocalof or relating to the multiplicative inverse of a quantity or function
“the reciprocal ratio of a:b is b:a”
Source: WordNet 3.1, Princeton University
