[ri-sip-ruh-kuh l] /rɪˈsɪp rə kəl/
given or felt by each toward the other; mutual:
given, performed, felt, etc., in return:
corresponding; matching; complementary; equivalent:
reciprocal privileges at other health clubs.
Grammar. (of a pronoun or verb) expressing mutual relationship or action:
“Each other” and “one another” are reciprocal pronouns.
inversely related or proportional; opposite.
Mathematics. noting expressions, relations, etc., involving reciprocals:
a reciprocal function.
Navigation. bearing in a direction 180° to a given direction; back.
something that is reciprocal to something else; equivalent; counterpart; complement.
Also called multiplicative inverse. Mathematics. the ratio of unity to a given quantity or expression; that by which the given quantity or expression is multiplied to produce unity:
The reciprocal of x is 1/x.
of, relating to, or designating something given by each of two people, countries, etc, to the other; mutual: reciprocal friendship, reciprocal trade
given or done in return: a reciprocal favour
(of a pronoun) indicating that action is given and received by each subject; for example, each other in the sentence they started to shout at each other
(maths) of or relating to a number or quantity divided into one
(nautical) denoting a course or bearing that is 180° from the previous or assumed one
something that is reciprocal
(maths) Also called inverse. a number or quantity that when multiplied by a given number or quantity gives a product of one: the reciprocal of 2 is 0.5
1560s, with -al (1) + stem of Latin reciprocus “returning the same way, alternating,” from pre-Latin *reco-proco-, from *recus (from re- “back;” see re-, + -cus, adjective formation) + *procus (from pro- “forward;” see pro-, + -cus. Related: Reciprocally. The noun meaning “that which is reciprocal” (to another) is from 1560s.
reciprocal re·cip·ro·cal (rĭ-sĭp’rə-kəl)
Either of a pair of numbers whose product is 1. For example, the number 3 is the reciprocal of 1/3 .
The number by which a given number must be multiplied to get a result of one. The reciprocal of one-half, for example, is two.
noun 1. an unincorporated association formed so that its members can participate in reciprocal insurance.
noun 1. insurance in which members of a reciprocal exchange, acting through an attorney-in-fact, insure themselves and each other.
noun, Psychiatry. 1. the theory that the pairing of an anxiety-provoking stimulus with anxiety-reducing reactions will weaken the association between the stimulus and the anxiety.
noun, Surveying. 1. leveling between two widely separated points in which observations are made in both directions to eliminate the effects of atmospheric refraction and the curvature of the earth.