dual
English edit
Alternative forms edit
- du. (abbreviation, grammar)
Etymology edit
PIE word |
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*dwóh₁ |
Borrowed from Latin dualis (“two”), from duo (“two”) + adjective suffix -alis.
Pronunciation edit
- (UK) enPR: dyo͞oʹəl, jo͞oʹəl; IPA(key): /ˈdjuː.əl/, /ˈdʒuː.əl/
- (US) enPR: d(y)o͞o'əl; IPA(key): /ˈd(j)u.əl/
Audio (UK) (file) - Rhymes: -ʊəl
- Homophones: duel, jewel (with yod coalescence)
Adjective edit
dual (not comparable)
- Characterized by having two (usually equivalent) components.
- Synonyms: double, twin; see also Thesaurus:dual
- a dual-motor vehicle
- Pertaining to two, pertaining to a pair of.
- Synonyms: double, duplicate; see also Thesaurus:twofold
- dual engine failure
- dual citizenship
- 2020, Grace Ying May, “Women Disciplining Men: A Biblical Pattern of Leadership”, in Aída Besançon Spencer, William David Spencer, editors, Christian Egalitarian Leadership: Empowering the Whole Church According to the Scriptures, page 48:
- Both Deborah and Samuel held dual roles as judges and prophets.
- (grammar) Pertaining to a grammatical number in certain languages that refers to two of something, such as a pair of shoes.
- (mathematics, physics) Exhibiting duality.
- (linear algebra) Being the space of all linear functionals of (some other space).
- 2012, Doug Fisher, Hans-J. Lenz, Learning from Data: Artificial Intelligence and Statistics V, Springer Science & Business Media, →ISBN, page 81:
- Accordingly, a hyperplane in the sample space is dual to a subspace in the variable space.
- (category theory) Being the dual of some other category; containing the same objects but with source and target reversed for all morphisms.
- Synonym: opposite
- 1992, Colin McLarty, Elementary Categories, Elementary Toposes, Clarendon Press, →ISBN, page 77:
- Every category is dual to its own dual, so if a statement holds in all categories so does its dual.
Derived terms edit
- dual audio
- dual-band
- dual-boot
- dual boot
- dual cab
- dual citizen
- dual citizenship
- dual-clutch gearbox
- dual-coding theory
- dual control
- dual earner
- dual economy
- dual-edged sword
- dual-exceptional
- dual federalism
- dual-frequency
- dual graph
- dual heritage
- dualism
- duality
- dual mandate
- dual meet
- dual mode, dual-mode
- dual nationality
- dual offence
- dual phenomenology
- dual photon absorptiometry
- dual polyhedron
- dual-ported
- dual primary
- dual-purpose
- dual resident
- dual school
- dual-sector model
- dual-SIM
- dual SIM
- dual tone multi-frequency
- dual-tropic
- dual-use
- dual-use research of concern
- dual-voltage
- Hodge dual
- non-self-dual
- Taoist dual cultivation
Translations edit
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- The translations below need to be checked and inserted above into the appropriate translation tables. See instructions at Wiktionary:Entry layout § Translations.
Noun edit
dual (plural duals)
- Of an item that is one of a pair, the other item in the pair.
- (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.
- (Can we clean up(+) this sense?) (grammar) The dual number.
- (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 edit
Translations edit
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See also edit
- (grammatical numbers) grammatical number; singular, dual, trial, quadral, quintal, paucal, plural (Category: en:Grammar)
- unal
- duel
Verb edit
dual (third-person singular simple present duals, present participle (UK) dualling or (US) dualing, simple past and past participle (UK) dualled or (US) dualed)
- (transitive) To convert from single to dual; specifically, to convert a single-carriageway road to a dual carriageway.
- 1994, Great Britain. Parliament. House of Commons, Parliamentary Debates:
- I have to declare an interest and I do so with some ambivalence because if the road is dualled it is likely to take half of my front garden.
- 2006, David Lowe, Intermodal Freight Transport, page 163:
- The power generation and propulsion systems are dualled to accommodate component failure and maintain propulsion at reduced speed should any part of one system be lost.
- 2021 September 22, “Network News: Nexus increases Tyne and Wear Metro train order to 46”, in RAIL, number 940, page 23:
- The investment will allow Nexus to increase service frequencies, reduce journey times, and improve reliability by dualling three sections of line between Pelaw and South Shields.
Anagrams edit
French edit
Pronunciation edit
Audio (file)
Adjective edit
dual (feminine duale, masculine plural duaux, feminine plural duales)
Noun edit
dual m (plural duaux)
Further reading edit
- “dual”, in Trésor de la langue française informatisé [Digitized Treasury of the French Language], 2012.
German edit
Pronunciation edit
Adjective edit
dual (strong nominative masculine singular dualer, not comparable)
Declension edit
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 |
Further reading edit
Irish edit
Pronunciation edit
Etymology 1 edit
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 edit
dual m (genitive singular duail, nominative plural duail)
- lock, tress
- Synonyms: dlaoi, dual gruaige
- wisp, tuft
- Synonym: dlaoi
- ply, strand
- twist, twine
- spiral, whirl
Declension edit
Derived terms edit
Verb edit
dual (present analytic dualann, future analytic dualfaidh, verbal noun dualadh, past participle dualta)
- (transitive) twine
- (transitive) braid, coil
- (transitive) interlace, fold
Conjugation edit
* indirect relative
† archaic or dialect form
‡‡ dependent form used with particles that trigger eclipsis
Etymology 2 edit
(This etymology is missing or incomplete. Please add to it, or discuss it at the Etymology scriptorium.)
Noun edit
dual m (genitive singular duail, nominative plural duail)
Declension edit
Derived terms edit
Etymology 3 edit
From Old Irish dúal (“that which belongs or is proper to an individual by nature or descent”), from Proto-Indo-European *dʰewgʰ-.
Adjective edit
dual (genitive singular masculine duail, genitive singular feminine duaile, plural duala, comparative duaile)
- 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.”)
- proper, fitting
- in the natural order of things
- fated
- possible
Declension edit
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.
Related terms edit
Mutation edit
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. |
Further reading edit
- Ó Dónaill, Niall (1977), “dual”, in Foclóir Gaeilge–Béarla, Dublin: An Gúm, →ISBN
- G. Toner, M. Ní Mhaonaigh, S. Arbuthnot, D. Wodtko, M.-L. Theuerkauf, editors (2019), “1 dúal”, in eDIL: Electronic Dictionary of the Irish Language
- G. Toner, M. Ní Mhaonaigh, S. Arbuthnot, D. Wodtko, M.-L. Theuerkauf, editors (2019), “2 dúal”, in eDIL: Electronic Dictionary of the Irish Language
- Entries containing “dual” in English-Irish Dictionary, An Gúm, 1959, by Tomás de Bhaldraithe.
- Finck, F. N. (1899) Die araner mundart (in German), volume II, Marburg: Elwert’sche Verlagsbuchhandlung, page 72
- Entries containing “dual” in New English-Irish Dictionary by Foras na Gaeilge.
Portuguese edit
Pronunciation edit
Adjective edit
dual m or f (plural duais, not comparable)
- dual (having two elements)
Derived terms edit
Romanian edit
Etymology edit
Borrowed from French duel, from Latin dualis.
Noun edit
dual n (plural duale)
Declension edit
Scottish Gaelic edit
Etymology 1 edit
From Old Irish dúal (“that which belongs or is proper to an individual by nature or descent”), from Proto-Indo-European *dʰewgʰ-.
Pronunciation edit
Adjective edit
dual (comparative duaile)
- hereditary
- usual, natural
- 'S dual do phoileasman a bhith amharasach. ― It's natural for a policeman to be suspicious.
Noun edit
dual m (genitive singular duail, plural dualan)
- birthright
- Synonym: còir-bhreith
- due
- something which is natural and/or usual
Derived terms edit
Etymology 2 edit
From Old Irish dúal (“tress, lock of hair”), from Proto-Celtic *doklos, from Proto-Indo-European *doḱlos.
Noun edit
dual m (genitive singular duail, plural dualan)
Verb edit
dual (past dhual, future dualidh, verbal noun dualadh, past participle dualte)
Mutation edit
Scottish Gaelic mutation | |
---|---|
Radical | Lenition |
dual | dhual |
Note: Some of these forms may be hypothetical. Not every possible mutated form of every word actually occurs. |
References edit
- MacBain, Alexander; Mackay, Eneas (1911), “dual”, in An Etymological Dictionary of the Gaelic Language, Stirling, →ISBN, page 145
Further reading edit
- G. Toner, M. Ní Mhaonaigh, S. Arbuthnot, D. Wodtko, M.-L. Theuerkauf, editors (2019), “1 dúal”, in eDIL: Electronic Dictionary of the Irish Language
- G. Toner, M. Ní Mhaonaigh, S. Arbuthnot, D. Wodtko, M.-L. Theuerkauf, editors (2019), “2 dúal”, in eDIL: Electronic Dictionary of the Irish Language
Spanish edit
Etymology edit
Pronunciation edit
Adjective edit
dual m or f (masculine and feminine plural duales)
Derived terms edit
Related terms edit
Further reading edit
- “dual”, in Diccionario de la lengua española, Vigésima tercera edición, Real Academia Española, 2014