- (abbreviation, grammar): du.
- (UK) enPR: dyo͞o'əl, djo͞o'əl; IPA(key): /ˈdjuː.əl/, /ˈdʒuː.əl/
- (US) enPR: do͞o'əl, dyo͞o'əl; IPA(key): /ˈduː.əl/, /ˈdjuː.əl/
Audio (UK) (file)
- Rhymes: -ʊəl
- Homophone: duel
dual (not comparable)
- Exhibiting duality; characterized by having two (usually equivalent) components.
- Acting as a counterpart.
- dual-headed computer
- (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.
- (linear algebra) Being the space of all linear functionals of (some other space).
- (category theory) Being the dual of (some other category); containing the same objects but with domain and codomain reversed for all functions.
- (category theory): opposite
- 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 Wiktionary:Entry layout#Translations.
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.
- (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.
- (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.
- (grammatical numbers) grammatical number; singular, dual, trial, quadral, paucal, plural (Category: en:Grammar)
* Indirect relative
† Dialect form
- 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
|Positive||Masculine||Feminine||(strong noun)||(weak noun)|
¹ This form is lenited after a noun if possible.
² This form is lenited if possible when the preceding noun is lenited and governed by the definite article.
³ This form is lenited if possible when the preceding noun ends in a slender consonant.
|Note: Some of these forms may be hypothetical. Not every
possible mutated form of every word actually occurs.
dual (comparative nas duaile)