biconditional

American

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

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.”

biconditional British

/ ˌbaɪkənˈdɪʃənəl /

noun

another name for equivalence

"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

Etymology

Origin of biconditional

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

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023