WordCodex

dual

See also: Dual, duel, and duál

dual - English

Alternative forms

  • du. (abbreviation, grammar)

Pronunciation

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

Adjective

dual (not comparable)

  1. Characterized by having two (usually equivalent) components.
    • Synonyms: double, twin; see also dual
    • a dual-motor vehicle
  2. Pertaining to two, pertaining to a pair of.
    • Synonyms: double, duplicate; see also 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
    • Modern Arabic displays a dual number, as did Homeric Greek.
  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.

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.
    • The octahedron is the dual of the cube.
  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.

Derived terms

Translations

  • Arabic: مُثَنَّى‎ (muṯannā)
  • Armenian: երկակի (hy) (erkaki), երկակի թիվ (hy) (erkaki tʿiv)
  • Czech: duál (cs) m, dvojné číslo (cs) n
  • Danish: dualis c
  • Dutch: dualis (nl) m, tweevoud (nl) n
  • Faroese: tvítal n
  • Finnish: kaksikko (fi)
  • French: duel (fr) m
  • German: Dual (de) m, Zweizahl (de) f
  • Greek:
    • Ancient: δυϊκόν n (duïkón)
  • Hungarian: kettős szám, duális (hu)
  • Irish: déach
  • Navajo: nizhdiltʼéhígo
  • Norwegian:
  • Polish: liczba podwójna (pl) f
  • Portuguese: dual (pt) m
  • Russian: дво́йственное число́ (ru) m (dvójstvennoje čisló)
  • Serbo-Croatian:
  • Slovene: dvojina (sl) f
  • Swedish: dualis (sv) c
  • Thai: ทวิพจน์ (th)
  • Volapük: telnum (vo)

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

dual - French

Adjective

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

  1. dual

Noun

dual m (plural duaux)

  1. dual

dual - German

Pronunciation

  • IPA: [duˈaːl]
  • Hyphenation: du‧al

Adjective

dual (strong nominative masculine singular dualer, not comparable)

  1. dual

Declension

number & gender singular plural
masculine feminine neuter
predicative er ist dual sie ist dual es ist dual sie sind dual
strong declension (without article) nominative dualer duale duales duale
genitive dualen dualer dualen dualer
dative dualem dualer dualem dualen
accusative dualen duale duales duale
weak declension (with definite article) nominative der duale die duale das duale die dualen
genitive des dualen der dualen des dualen der dualen
dative dem dualen der dualen dem dualen den dualen
accusative den dualen die duale das duale die dualen
mixed declension (with indefinite article) nominative ein dualer eine duale ein duales (keine) dualen
genitive eines dualen einer dualen eines dualen (keiner) dualen
dative einem dualen einer dualen einem dualen (keinen) dualen
accusative einen dualen eine duale ein duales (keine) dualen

dual - Irish

Pronunciation

  • IPA: /d̪ˠuəl̪ˠ/, /d̪ˠuəlˠ/

Noun

dual m (genitive singular duail, nominative plural duail)

  1. lock, tress
  2. wisp, tuft
  3. ply, strand
  4. twist, twine
  5. spiral, whirl

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

Derived terms

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

singular plural relative autonomous
first second third first second third
indicative present dualaim dualann tú; dualair† dualann sé, sí dualaimid dualann sibh dualann siad; dualaid† a dhualann; a dhualas / a ndualann*; a ndualas* dualtar
past dhual mé; dhualas dhual tú; dhualais dhual sé, sí dhualamar; dhual muid dhual sibh; dhualabhair dhual siad; dhualadar a dhual / ar dhual* dualadh
past habitual dhualainn / ndualainn‡‡ dhualtá / ndualtᇇ dhualadh sé, sí / ndualadh sé, s퇇 dhualaimis; dhualadh muid / ndualaimis‡‡; ndualadh muid‡‡ dhualadh sibh / ndualadh sibh‡‡ dhualaidís; dhualadh siad / ndualaidís‡‡; ndualadh siad‡‡ a dhualadh / a ndualadh* dhualtaí / ndualta퇇
future dualfaidh mé; dualfad dualfaidh tú; dualfair† dualfaidh sé, sí dualfaimid; dualfaidh muid dualfaidh sibh dualfaidh siad; dualfaid† a dhualfaidh; a dhualfas / a ndualfaidh*; a ndualfas* dualfar
conditional dhualfainn / ndualfainn‡‡ dhualfá / ndualfᇇ dhualfadh sé, sí / ndualfadh sé, s퇇 dhualfaimis; dhualfadh muid / ndualfaimis‡‡; ndualfadh muid‡‡ dhualfadh sibh / ndualfadh sibh‡‡ dhualfaidís; dhualfadh siad / ndualfaidís‡‡; ndualfadh siad‡‡ a dhualfadh / a ndualfadh* dhualfaí / ndualfa퇇
subjunctive present go nduala mé; go ndualad† go nduala tú; go ndualair† go nduala sé, sí go ndualaimid; go nduala muid go nduala sibh go nduala siad; go ndualaid† — go ndualtar
past dá ndualainn dá ndualtá dá ndualadh sé, sí dá ndualaimis; dá ndualadh muid dá ndualadh sibh dá ndualaidís; dá ndualadh siad — dá ndualtaí
imperative dualaim dual dualadh sé, sí dualaimis dualaigí; dualaidh† dualaidís — dualtar
verbal noun dualadh
past participle dualta

* Indirect relative † Archaic or dialect form ‡‡ Dependent form used with particles that trigger eclipsis

Noun

dual m (genitive singular duail, nominative plural duail)

  1. dowel
  2. knot (in timber)

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

Derived terms

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.
    • Ní dual don diabhal bheith díomhaoin.
      • No rest for the wicked.
      • (literally, “It is not in the devil's nature to be idle.”)
  2. proper, fitting
  3. in the natural order of things
  4. fated
  5. possible

Declension

Singular Plural (m/f)
Positive Masculine Feminine (strong noun) (weak noun)
Nominative dual dhual duala; dhuala²
Vocative dhuail duala
Genitive duale duala dual
Dative dual; dhual¹ dhual; dhuail (archaic) duala; dhuala²
Comparative níos duale
Superlative is duale

¹ When the preceding noun is lenited and governed by the definite article. ² When the preceding noun ends in a slender consonant.

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.

dual - Portuguese

Pronunciation

  • (Brazil) IPA: /duˈaw/ [dʊˈaʊ̯], (faster pronunciation) /ˈdwaw/ [ˈdwaʊ̯]
  • (Portugal) IPA: /ˈdwal/ [ˈdwaɫ]
  • Hyphenation: du‧al

Adjective

dual m or f (plural duais, not comparable)

  1. dual (having two elements)

Derived terms

dual - Romanian

Noun

dual n (plural duale)

  1. (grammar) dual

Declension

singular plural
indefinite articulation definite articulation indefinite articulation definite articulation
nominative/accusative (un) dual dualul (niște) duale dualele
genitive/dative (unui) dual dualului (unor) duale dualelor
vocative dualule dualelor

dual - Scottish Gaelic

Pronunciation

  • IPA: /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.

Noun

dual m (genitive singular duail, plural dualan)

  1. birthright
  2. due
  3. something which is natural and/or usual

Derived terms

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

Scottish Gaelic mutation
Radical Lenition
dualdhual
Note: Some of these forms may be hypothetical. Not every possible mutated form of every word actually occurs.

dual - Spanish

Pronunciation

  • IPA: /ˈdwal/ [ˈd̪wal]
  • Syllabification: dual

Adjective

dual (plural duales)

  1. dual
  2. (grammar) dual

Derived terms

Meaning and Definition of dual
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