reciprocal

[ ri-sip-ruh-kuh l ]
/ rɪˈsɪp rə kəl /

noun

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.

QUIZZES

THIS WEEK’S WORD OF THE DAY QUIZ IS POSITIVELY FELICIFIC

Do you study our Words of the Day with great assiduity? See how many you remember from March 30 to April 5!
Question 1 of 7
transliterate

Origin of reciprocal

1560–70; < Latin reciproc(us) returning, reciprocal + -al1

1. See mutual.

WORDS THAT MAY BE CONFUSED WITH reciprocal

mutual reciprocal (see synonym study at mutual)common mutual reciprocal (see usage note at mutual)

Words nearby reciprocal

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

British Dictionary definitions for nonreciprocal

reciprocal
/ (rɪˈsɪprəkəl) /

noun

something that is reciprocal
Also called: inverse maths a number or quantity that when multiplied by a given number or quantity gives a product of onethe reciprocal of 2 is 0.5

Word Origin for reciprocal

C16: from Latin reciprocus alternating
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Medical definitions for nonreciprocal

reciprocal
[ rĭ-sĭprə-kəl ]

Of or relating to a neuromuscular phenomenon in which the excitation of one group of muscles is accompanied by the inhibition of another.
Of or being a pair of crosses in which the male parent in one cross is of the same genotype or phenotype as the female parent in the other cross.

Scientific definitions for nonreciprocal

reciprocal
[ rĭ-sĭprə-kəl ]

Either of a pair of numbers whose product is 1. For example, the number 3 is the reciprocal of 13.