duality

English

Etymology

From Latin duālitās.

From dual +‎ -ity.

Pronunciation

• IPA^(key): /d(j)uːˈælɪti/

• Audio (Southern England):

  (file)

• Rhymes: -ælɪti

Noun

duality (countable and uncountable, plural dualities)

1. A classification into two subclasses or opposed parts.

   moral duality

   philosophical duality

   The novel explored the duality of good and evil.

   He was fascinated by the duality of human nature.

2. (projective geometry) The interchangeability of points and planes.
3. (mathematics, physics) The mathematical equivalence of two seemingly different theoretical descriptions of a physical system.

   wave-particle duality

Synonyms

• dichotomy

Derived terms

• autoduality
• Koszul duality
• nonduality
• non-self-duality
• pseudoduality
• self-duality
• wave-particle duality

Translations

classification into two subclasses or opposed parts

• Finnish: kaksijakoisuus (fi), kaksinaisuus
• French: dualité (fr) f
• Occitan: dualitat
• Persian: زوجیت (fa)
• Polish: dwoistość (pl) f, dualność f
• Portuguese: dualidade (pt)
• Scottish Gaelic: dà-fhillteachd f

interchangeability of points and planes

• French: dualité (fr) f
• German: Dualität (de) f
• Portuguese: dualidade (pt) f

mathematical equivalence of two seemingly different theoretical descriptions of a physical system

• Bulgarian: дуализъм m (dualizǎm)
• Finnish: duaalisuus
• French: dualité (fr) f
• Persian: زوجیت (fa)
• Polish: dualność f
• Portuguese: dualidade (pt) f