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dual

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English

Etymology

[[w:Template:lang:la language|Template:lang:la]][[Category:Template:lang:la derivations]] dualis, two (adjective), from duo, two, + adjective suffix -alis

Pronunciation

  • (RP) dyo͝oəl, /djʊəl/, /djU@l/
  • (US) do͞o'əl, /ˈduəl/, /"du@l/
    Rhymes: -ʊəl

Homophones

Adjective

dual (not comparable)

Positive
dual

Comparative
not comparable

Superlative
none (absolute)

  1. Characterized by having two (usually equivalent) components.
  2. Double.
    dual-headed computer
  3. (grammar) Pertaining to grammatical number (as in singular and plural), referring to two of something, such as a pair of shoes, in the context of the singular, plural and in some languages, trial grammatical number. Modern Arabic displays a dual number, as did Homeric Greek.

Translations

The translations below need to be checked and inserted above into the appropriate translation tables, removing any numbers. Numbers do not necessarily match those in definitions. See instructions at Help:How to check translations.
  • Indonesian: ganda, dwi, dual
  • Interlingua: dual
  • Latin: dualis
  • Romanian: dual

Noun

dual (plural: duals)

  1. Of an item that is one of a pair, the other item in the pair.
  2. (geometry) Of a regular polyhedron with V vertices and F faces, the regular polyhedron having F vertices and V faces.
    The tetrahedron is the dual of the cube.
  3. (grammar) dual number The grammatical number of a noun marking two of something (as in singular, dual, plural), sometimes referring to two of anything (a couple of, exactly two of), or a chirality-marked pair (as in left and right, as with gloves or shoes) or in some languages as a discourse marker, "between you and me". A few languages display trial number.
  4. (mathematics) Of a vector in an inner product space, the linear functional corresponding to taking the inner product with that vector. The set of all duals is a vector space called the dual space.

Related terms

See also


Irish

Etymology

From Old Irish dúal (tress, lock of hair) < Proto-Celtic *doklo- < Proto-Indo-European *dok̑-lo- (cf. Icelandic tagl (horse's tail), Old English tægel, English tail).

Pronunciation

  • IPA: [d̪ˠuəl̪ˠ]

Noun

dual m.

  1. tuft

Declension

First declension

Bare forms:

Case Singular Plural
Nominative dual duail
Vocative a dhuail a dhuala
Genitive duail dual
Dative dual duail

Forms with the definite article:

Case Singular Plural
Nominative an dual na duail
Genitive an duail na ndual
Dative leis an dual

don dual

leis na duail

Mutation

Irish mutation
Radical Lenition Eclipsis
dual dhual ndual
Note: Some of these forms may be hypothetical. Not every
possible mutated form of every word actually occurs.

Elsewhere on the web

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En-Fr

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