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DUALITY
duality
(noun) (geometry) the interchangeability of the roles of points and planes in the theorems of projective geometry
duality, wave-particle duality
(noun) (physics) the property of matter and electromagnetic radiation that is characterized by the fact that some properties can be explained best by wave theory and others by particle theory
dichotomy, duality
(noun) being twofold; a classification into two opposed parts or subclasses; “the dichotomy between eastern and western culture”
Source: WordNet® 3.1
Etymology
Noun
duality (countable and uncountable, plural dualities)
A classification into two subclasses or opposed parts.
(projective geometry) The interchangeability of points and planes.
(mathematics, physics) The mathematical equivalence of two seemingly different theoretical descriptions of a physical system.
Synonyms
• dichotomy
Source: Wiktionary
Du"al"i*ty, n. Etym: [L. dualitas: cf. F. dualité.]
Definition: The quality or condition of being two or twofold; dual character or usage.
Source: Webster’s Unabridged Dictionary 1913 Edition
Recent Word Finds
Word of the Day
4 February 2025
DISKETTE
(noun) a small plastic magnetic disk enclosed in a stiff envelope with a radial slit; used to store data or programs for a microcomputer; “floppy disks are noted for their relatively slow speed and small capacity and low price”
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