dichotomy
Americannoun
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dichotomies
plural
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division into two parts, kinds, etc.; subdivision into halves or pairs.
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division into two mutually exclusive, opposed, or contradictory groups.
a dichotomy between thought and action.
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Botany. a mode of branching by constant forking, as in some stems, in veins of leaves, etc.
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Astronomy. the phase of the moon or of an inferior planet when half of its disk is visible.
noun
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division into two parts or classifications, esp when they are sharply distinguished or opposed
the dichotomy between eastern and western cultures
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logic the division of a class into two mutually exclusive subclasses
the dichotomy of married and single people
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botany a simple method of branching by repeated division into two equal parts
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the phase of the moon, Venus, or Mercury when half of the disc is visible
Usage
Dichotomy should always refer to a division of some kind into two groups. It is sometimes used to refer to a puzzling situation which seems to involve a contradiction, but this use is generally thought to be incorrect
Other Word Forms
Derived Forms
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subdichotomynoun
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dichotomicadjective
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dichotomousadjective
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dichotomicallyadverb
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dichotomouslyadverb
Inflected Forms
Nouns
Etymology
Origin of dichotomy
First recorded in 1580–90; from Late Latin dichotomia, from Greek dichotomía “dividing in two (of the quarters of the moon), point of a bisection, division into two parts”; see origin at dicho-, -tomy
Explanation
A dichotomy is an idea or classification split in two. When you point out a dichotomy, you draw a clear distinction between two things. A dichotomy is a contrast between two things. When there are two ideas, especially two opposed ideas — like war and peace, or love and hate — you have a dichotomy. You often hear about a "false dichotomy," which occurs when a situation is unfairly represented as an "either/or" scenario. For example, the statement "All cars are either small and efficient or large and polluting" creates a false dichotomy because there are some cars that don't fit into either category.
Vocabulary lists containing dichotomy
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Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
See Examples For:
The dichotomy has been on loud display this week.
From The Wall Street Journal ● Oct. 13, 2026
It is a win-win-win outcome that challenges the false dichotomy of conservation versus production that has dominated public debate for decades.
From Science Daily ● Oct. 4, 2026
Pre-college admissions scandal, Huffman was enjoying a career boost on “Desperate Housewives,” and the movie marketing played with the dichotomy between her hyper-feminine public image and the film’s depiction of transfemininity.
From Salon ● Aug. 28, 2026
"It's bohemian but it's also populated by some of the richest people in the world. It's a strange dichotomy."
From BBC ● Jul. 24, 2026
But the dichotomy of love and disdain living side-by-side is what surprises me.
From "The Help" by Kathryn Stockett
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The publication sparked backlash from climate scientists who accused Gates of making arguments based on "false dichotomies" - pitting mitigation and adaptation against each other.
From BBC ● Jul. 29, 2026
It doesn’t seem nearly as big as the dot-com bubble, and the dichotomies don’t seem extreme, as in the 1990s.
From Barron's ● Feb. 26, 2026
The last Burning Man I attended was in 2016 but even then the cracks in the foundation were beginning to show the dichotomies of the festival’s dystopian utopia.
From Los Angeles Times ● Sep. 10, 2023
Collapsing those false dichotomies is as much the role of the leader as enshrining core values, setting a strategy and inspiring action.
From Scientific American ● Jun. 30, 2023
The alleged controversy is as bogus as other catchy dichotomies such as nature versus nurture and America: Love It or Leave It.
From "The Sense of Style" by Steven Pinker
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Get a wordDefinitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.