dual

dual

synonyms, antonyms, definitions, examples & translations of dual in English

English Online Dictionary. What means dual‎? What does dual mean?

English

Alternative forms

  • du. (abbreviation, grammar)

Etymology

Borrowed from Latin dualis (“two”), from duo (“two”) + adjective suffix -alis.

Pronunciation

  • (UK) enPR: dyo͞oʹəl, jo͞oʹəl; IPA(key): /ˈdjuː.əl/, /ˈdʒuː.əl/
  • (US) enPR: d(y)o͞o'əl; IPA(key): /ˈd(j)u.əl/
  • Rhymes: -uːəl
  • Homophones: duel; jewel (yod-coalescence)

Adjective

dual (not comparable)

  1. Characterized by having two (usually equivalent) components.
    Synonyms: double, twin; see also Thesaurus:dual
    a dual-motor vehicle
  2. Pertaining to two, pertaining to a pair of.
    Synonyms: double, duplicate; see also Thesaurus:twofold
    dual engine failure
    dual citizenship
  3. (grammar) Pertaining to a grammatical number in certain languages that refers to two of something, such as a pair of shoes.
    Coordinate terms: singular, trial, plural
  4. (mathematics, physics) Exhibiting duality.
  5. (linear algebra) Being the space of all linear functionals of (some other space).
  6. (category theory) Being the dual of some other category; containing the same objects but with source and target reversed for all morphisms.
    Synonym: opposite

Derived terms

Translations

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.
  3. (grammar) The dual 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.
  5. (wrestling) A head-to-head match or meet between two teams, such as two high schools or colleges.

Derived terms

Translations

See also

  • (grammatical numbers) grammatical number; singular, dual, trial, quadral, quintal, paucal, plural (Category: en:Grammar)
  • unal
  • duel

Verb

dual (third-person singular simple present duals, present participle (UK) dualling or (US) dualing, simple past and past participle (UK) dualled or (US) dualed)

  1. (transitive) To convert from single to dual; specifically, to convert a single-carriageway road to a dual carriageway.

Anagrams

  • Auld, Daul, Dula, auld, laud, udal

French

Pronunciation

Adjective

dual (feminine duale, masculine plural duaux, feminine plural duales)

  1. dual

Noun

dual m (plural duaux)

  1. dual

Further reading

  • “dual”, in Trésor de la langue française informatisé [Digitized Treasury of the French Language], 2012.

German

Pronunciation

  • IPA(key): [duˈaːl]
  • Hyphenation: du‧al
  • Rhymes: -aːl

Adjective

dual (strong nominative masculine singular dualer, not comparable)

  1. dual

Declension

Further reading

  • “dual” in Duden online
  • “dual” in Digitales Wörterbuch der deutschen Sprache

Irish

Pronunciation

  • IPA(key): /d̪ˠuəl̪ˠ/, /d̪ˠuəlˠ/

Etymology 1

From Old Irish dúal (“tress, lock of hair”), from Proto-Celtic *doklos, from Proto-Indo-European *doḱlos (compare Icelandic tagl (“horse’s tail”), Old English tæġl, English tail).

Noun

dual m (genitive singular duail, nominative plural duail)

  1. lock, tress
    Synonyms: dlaoi, dual gruaige
  2. wisp, tuft
    Synonym: dlaoi
  3. ply, strand
  4. twist, twine
  5. spiral, whirl
Declension
Derived terms
  • dualach1
  • duailín, dualán

Verb

dual (present analytic dualann, future analytic dualfaidh, verbal noun dualadh, past participle dualta)

  1. (transitive) twine
  2. (transitive) braid, coil
  3. (transitive) interlace, fold
Conjugation

Etymology 2

(This etymology is missing or incomplete. Please add to it, or discuss it at the Etymology scriptorium.)

Noun

dual m (genitive singular duail, nominative plural duail)

  1. dowel
  2. knot (in timber)
    Synonyms: alt, cranra
Declension
Derived terms
  • dualach2
  • dualbhata

Etymology 3

From Old Irish dúal (“that which belongs or is proper to an individual by nature or descent”), from Proto-Indo-European *dʰewgʰ-.

Adjective

dual (genitive singular masculine duail, genitive singular feminine duaile, plural duala, comparative duaile)

  1. native, natural
    Is dual dó a bheith leisciúil. ― He is naturally lazy.
  2. proper, fitting
  3. in the natural order of things
  4. fated
  5. possible
Declension
Related terms
  • dualgas

Mutation

Further reading

  • Ó Dónaill, Niall (1977) “dual”, in Foclóir Gaeilge–Béarla, Dublin: An Gúm, →ISBN
  • Gregory Toner, Sharon Arbuthnot, Máire Ní Mhaonaigh, Marie-Luise Theuerkauf, Dagmar Wodtko, editors (2019), “1 dúal”, in eDIL: Electronic Dictionary of the Irish Language
  • Gregory Toner, Sharon Arbuthnot, Máire Ní Mhaonaigh, Marie-Luise Theuerkauf, Dagmar Wodtko, editors (2019), “2 dúal”, in eDIL: Electronic Dictionary of the Irish Language
  • de Bhaldraithe, Tomás (1959) “dual”, in English-Irish Dictionary, An Gúm
  • Finck, F. N. (1899) Die araner mundart [The Aran Dialect] (in German), Zweiter Band: Wörterbuch [Second volume: Dictionary], Marburg: Elwert’sche Verlagsbuchhandlung, page 72
  • “dual”, in New English-Irish Dictionary, Foras na Gaeilge, 2013–2025

Portuguese

Pronunciation

  • Rhymes: (Portugal) -al, (Brazil) -aw
  • Hyphenation: du‧al

Adjective

dual m or f (plural duais, not comparable)

  1. dual (having two elements)

Derived terms

  • dualidade
  • dualmente

Romanian

Etymology

Borrowed from French duel, from Latin dualis.

Noun

dual n (plural duale)

  1. (grammar) dual

Declension

Scottish Gaelic

Etymology 1

From Old Irish dúal (“that which belongs or is proper to an individual by nature or descent”), from Proto-Indo-European *dʰewgʰ-.

Pronunciation

  • IPA(key): /t̪uəɫ̪/

Adjective

dual (comparative duaile)

  1. hereditary
  2. usual, natural
    'S dual do phoileasman a bhith amharasach. ― It's natural for a policeman to be suspicious.
Derived terms
  • bu dual do dh'isean an ròin a dhol chun na mara

Noun

dual m (genitive singular duail, plural dualan)

  1. birthright
    Synonym: còir-bhreith
  2. due
  3. something which is natural and/or usual

Etymology 2

From Old Irish dúal (“tress, lock of hair”), from Proto-Celtic *doklos, from Proto-Indo-European *doḱlos.

Noun

dual m (genitive singular duail, plural dualan)

  1. curl, lock of hair
  2. plait, strand, braid, or fold
  3. ringlet

Verb

dual (past dhual, future dualidh, verbal noun dualadh, past participle dualte)

  1. plait, twist
  2. loop, curl
  3. fold
  4. link

Mutation

References

  • MacBain, Alexander, Mackay, Eneas (1911) “dual”, in An Etymological Dictionary of the Gaelic Language‎[1], Stirling, →ISBN, page 145

Further reading

  • Gregory Toner, Sharon Arbuthnot, Máire Ní Mhaonaigh, Marie-Luise Theuerkauf, Dagmar Wodtko, editors (2019), “1 dúal”, in eDIL: Electronic Dictionary of the Irish Language
  • Gregory Toner, Sharon Arbuthnot, Máire Ní Mhaonaigh, Marie-Luise Theuerkauf, Dagmar Wodtko, editors (2019), “2 dúal”, in eDIL: Electronic Dictionary of the Irish Language

Spanish

Etymology

From Latin duālis.

Pronunciation

  • IPA(key): /ˈdwal/ [ˈd̪wal]
  • Rhymes: -al
  • Syllabification: dual

Adjective

dual m or f (masculine and feminine plural duales)

  1. dual
  2. (grammar) dual

Derived terms

Related terms

Further reading

  • “dual”, in Diccionario de la lengua española [Dictionary of the Spanish Language] (in Spanish), online version 23.8, Royal Spanish Academy [Spanish: Real Academia Española], 2024 December 10

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individually

individual

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This article based on an article on Wiktionary. The list of authors can be seen in the page history there. The original work has been modified. This article is distributed under the terms of this license.