dichotomous

adjective

di·​chot·​o·​mous dī-ˈkä-tə-məs How to pronounce dichotomous (audio)
also də-
1
: dividing into two contradictory or contrasting parts or groups
2
: relating to, involving, or proceeding from dichotomy
the limitations of a dichotomous worldview
All forms of cultural evolution, language included, are devilishly intricate networks, not orderly systems of dichotomous branching.Stephen Jay Gould
… many pollsters provide only two possible answers to a question …, eliminating the central tendency and artificially reducing a spectrum of responses towards dichotomous poles.Jeffrey Sonnenfeld and Steven Tian
dichotomously adverb
dichotomousness noun

Examples of dichotomous in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
These leaders make the options dichotomous when there is a variety to consider. Ryan Lahti, Forbes.com, 7 May 2025 The lilac’s blooms are dichotomous, both quietly delicate and also boisterous with a showstopping flair. Emily Leahy, Hartford Courant, 3 May 2026 These dichotomous experiences have shown me how court decisions affect victims, defendants and families. Nathaniel Percy, Daily News, 5 May 2026 Are such dichotomous conceptions of the novel mutually exclusive? Brady Brickner-Wood, New Yorker, 8 July 2026 See All Example Sentences for dichotomous

Word History

Etymology

borrowed from Late Latin dichotomos, borrowed from Greek dichótomos "cut in half, divided equally," from dicho- dicho- + -tomos, adjective derivative from the base of témnein "to cut" — more at tome

First Known Use

1752, in the meaning defined at sense 1

Time Traveler
The first known use of dichotomous was in 1752

Browse Nearby Words

Cite this Entry

“Dichotomous.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/dichotomous. Accessed 10 Jul. 2026.

Kids Definition

dichotomous

adjective
1
: dividing into two parts or groups
2
: relating to, involving, or resulting from dichotomy

Medical Definition

dichotomous

adjective
di·​chot·​o·​mous
dī-ˈkät-ə-məs also də-
: dividing into two parts
dichotomous branching
dichotomously adverb
Love words? Need even more definitions?

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