say it: doo-AL-uh-tee
duality is a noun meaning "being twofold; a classification into two opposed parts or subclasses". It carries 3 recorded senses.
being twofold; a classification into two opposed parts or subclasses
“the dichotomy between eastern and western culture”
(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
physics
(geometry) the interchangeability of the roles of points and planes in the theorems of projective geometry
geometry
Forms marked · are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.
Definitions, synonyms and semantic relations for duality come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.