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biconditional

[ bahy-kuhn-dish-uh-nl ]
/ ˌbaɪ kənˈdɪʃ ə nl /
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adjective Logic.

(of a proposition) asserting that the existence or occurrence of one thing or event depends on, and is dependent on, the existence or occurrence of another, as “A if and only if B.”

QUIZZES

DO A DOUBLE TAKE ON THIS QUIZ ON CONTRONYMS

Look both ways before you take this quiz on contronyms, or words that can have opposite meanings.
Question 1 of 7
Choose the sentence that uses "rent" correctly.
No one wanted to rent the run-down house on the corner.
His rent was so loud that people the next block over could hear it.
I had rent the apartment from an eccentric old lady.
TAKE THE QUIZ TO FIND OUT

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Origin of biconditional

First recorded in 1935–40; bi-1 + conditional

Words nearby biconditional

bicolor, bicolour, bicompact, biconcave, biconcave lens, biconditional, bicondylar joint, bicone, bicontinental, biconvex, biconvex lens
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

British Dictionary definitions for biconditional

biconditional
/ (ˌbaɪkənˈdɪʃənəl) /

noun

another name for equivalence (def. 2)
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
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