Dictionary.com

duality

[ doo-al-i-tee, dyoo- ]
/ duˈæl ɪ ti, dyu- /
Save This Word!

noun
a dual state or quality.
Mathematics. a symmetry within a mathematical system such that a theorem remains valid if certain objects, relations, or operations are interchanged, as the interchange of points and lines in a plane in projective geometry.
QUIZ
FIRE UP YOUR VOCAB FOR A "RED" SYNONYMS QUIZ
No fire engine reds here, only a fierce collection of vibrant words for the color red to test yourself on.
Question 1 of 7
What does "amaranth" mean?
Meet Grammar CoachWrite or paste your essay, email, or story into Grammar Coach and get grammar helpImprove Your Writing
Meet Grammar CoachImprove Your Writing
Write or paste your essay, email, or story into Grammar Coach and get grammar help

Origin of duality

1350–1400; Middle English dualitie<Late Latin duālitās.See dual, -ity

OTHER WORDS FROM duality

non·du·al·i·ty, noun
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

How to use duality in a sentence

British Dictionary definitions for duality

duality
/ (djuːˈælɪtɪ) /

noun plural -ties
the state or quality of being two or in two parts; dichotomy
physics the principle that a wave-particle duality exists in microphysics in which wave theory and corpuscular theory are complementary. The propagation of electromagnetic radiation is analysed using wave theory but its interaction with matter is described in terms of photons. The condition of particles such as electrons, neutrons, and atoms is described in terms of de Broglie waves
geometry the interchangeability of the roles of the point and the plane in statements and theorems in projective geometry
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
FEEDBACK