📖 WordNook

reciprocal

adjective
  1. of or relating to the multiplicative inverse of a quantity or function
    “the reciprocal ratio of a:b is b:a”
  2. concerning each of two or more persons or things
    mutual
noun
  1. hybridization involving a pair of crosses that reverse the sexes associated with each genotype
    reciprocal cross
  2. (mathematics) one of a pair of numbers whose product is 1: the reciprocal of 2/3 is 3/2
    multiplicative inverse
  3. something (a term or expression or concept) that has a reciprocal relation to something else
    “risk is the reciprocal of safety”