biconditional

noun
bi·​con·​di·​tion·​al | \ ˌbī-kən-ˈdish-nəl How to pronounce biconditional (audio) , -ˈdi-shə- \

Definition of biconditional

: a relation between two propositions that is true only when both propositions are simultaneously true or false — see Truth Table

First Known Use of biconditional

1940, in the meaning defined above

Keep scrolling for more

Learn More about biconditional

Time Traveler for biconditional

Time Traveler

The first known use of biconditional was in 1940

See more words from the same year

Statistics for biconditional

Cite this Entry

“Biconditional.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/biconditional. Accessed 19 Oct. 2020.

Comments on biconditional

What made you want to look up biconditional? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

Test Your Vocabulary

Farm Idioms Quiz

  • cow coming home
  • What does 'poke' refer to in the expression 'pig in a poke'?
Spell It

Can you spell these 10 commonly misspelled words?

TAKE THE QUIZ
Add Diction

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!