dual

made up of two parts; for two; double
Not to be confused with:duel – a prearranged combat between two people

du·al

D0408200 (do͞o′əl, dyo͞o′-)adj.1. Composed of two usually like or complementary parts; double: dual controls for pilot and copilot; a car with dual exhaust pipes.2. Having a double character or purpose: a belief in the dual nature of reality.3. Grammar Of, relating to, or being a number category that indicates two persons or things, as in Greek, Sanskrit, and Old English.n. Grammar 1. The dual number.2. An inflected form of a noun, adjective, pronoun, or verb used with two items or people.

[Latin duālis, from duo, two; see dwo- in Indo-European roots.]

du′al·ly adv.

dual

(ˈdjuːəl) adj1. relating to or denoting two2. twofold; double3. (Grammar) (in the grammar of Old English, Ancient Greek, and certain other languages) denoting a form of a word indicating that exactly two referents are being referred to4. (Mathematics) maths logic (of structures or expressions) having the property that the interchange of certain pairs of terms, and usually the distribution of negation, yields equivalent structures or expressionsn (Grammar) grammar a. the dual numberb. a dual form of a wordvb, duals, dualling or dualled (Civil Engineering) (tr) Brit to make (a road) into a dual carriageway[C17: from Latin duālis concerning two, from duo two] ˈdually adv

du•al

(ˈdu əl, ˈdyu-)

adj. 1. of, pertaining to, or noting two. 2. composed or consisting of two people, items, parts, etc., together; twofold; double: dual ownership. 3. having a twofold, or double, character or nature. 4. of or belonging to a grammatical category of number, as in Old English, Old Russian, or Arabic, used to indicate that a word denotes two persons or things. n. 5. Gram. the dual number. 6. a word or other form in the dual. [1535–45; < Latin duālis containing two, relating to a pair] du′al•ly, adv.

Thesaurus

Adj.	1.	dual - consisting of or involving two parts or components usually in pairs; "an egg with a double yolk"; "a double (binary) star"; "double doors"; "dual controls for pilot and copilot"; "duple (or double) time consists of two (or a multiple of two) beats to a measure"duple, doublemultiple - having or involving or consisting of more than one part or entity or individual; "multiple birth"; "multiple ownership"; "made multiple copies of the speech"; "his multiple achievements in public life"; "her multiple personalities"; "a pineapple is a multiple fruit"
	2.	dual - having more than one decidedly dissimilar aspects or qualities; "a double (or dual) role for an actor"; "the office of a clergyman is twofold; public preaching and private influence"- R.W.Emerson; "every episode has its double and treble meaning"-Frederick Harrisondouble, twofold, two-fold, threefold, three-fold, treblemultiple - having or involving or consisting of more than one part or entity or individual; "multiple birth"; "multiple ownership"; "made multiple copies of the speech"; "his multiple achievements in public life"; "her multiple personalities"; "a pineapple is a multiple fruit"
	3.	dual - a grammatical number category referring to two items or units as opposed to one item (singular) or more than two items (plural); "ancient Greek had the dual form but it has merged with the plural form in modern Greek"plural - grammatical number category referring to two or more items or units

dual

adjective twofold, double, twin, matched, coupled, paired, duplicate, binary, duplex his dual role as head of party and state

dual

adjective1. Composed of two parts or things:biform, binary, double, duple, duplex, duplicate, geminate, twofold.2. Consisting of two identical or similar related things, parts, or elements:double, paired, twin.

Translations

二重的双的

dual

(ˈdjuəl) adjective double; twofold; made up of two. a gadget with a dual purpose; The driving instructor's car has dual controls. 双的，二重的 dual carriageway a road divided by a central strip of land etc with each side used by traffic moving in one direction. 复式行车道，双线车道（有中央分隔带的车行道）

dual

Maths Logic (of structures or expressions) having the property that the interchange of certain pairs of terms, and usually the distribution of negation, yields equivalent structures or expressions

dual

i. Duplicated controls permitting either an instructor and a pupil or the pilot and the copilot to operate controls.
ii. Instructional flying hours or sorties logged in a flying log by the pupil.

dual

(mathematics)Every field of mathematics has a differentmeaning of dual. Loosely, where there is some binary symmetryof a theory, the image of what you look at normally under thissymmetry is referred to as the dual of your normal things.

In linear algebra for example, for any vector space V, overa field, F, the vector space of linear maps from V to F isknown as the dual of V. It can be shown that if V isfinite-dimensional, V and its dual are isomorphic (though noisomorphism between them is any more natural than any other).

There is a natural embedding of any vector space in the dualof its dual:

V -> V'': v -> (V': w -> wv : F)

(x' is normally written as x with a horizontal bar above it).I.e. v'' is the linear map, from V' to F, which maps any w tothe scalar obtained by applying w to v. In short, thisdouble-dual mapping simply exchanges the roles of function andargument.

It is conventional, when talking about vectors in V, to referto the members of V' as covectors.

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Synonyms for dual

adj twofold

Synonyms

Synonyms for dual

adj composed of two parts or things

Synonyms

adj consisting of two identical or similar related things, parts, or elements

Synonyms

Synonyms for dual

adj consisting of or involving two parts or components usually in pairs

Synonyms

Related Words

adj having more than one decidedly dissimilar aspects or qualities

Synonyms

Related Words

adj a grammatical number category referring to two items or units as opposed to one item (singular) or more than two items (plural)

Related Words