Transcription
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- US Pronunciation
- US IPA
- UK Pronunciation
- UK IPA
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- [doo-uh l, dyoo-]
- /ˈdu əl, ˈdyu-/
- /ˈdjuː.əl/
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- US Pronunciation
- US IPA
-
- [doo-uh l, dyoo-]
- /ˈdu əl, ˈdyu-/
Definitions of dual word
- adjective dual of, relating to, or noting two. 1
- noun dual a form in the dual, as Old English git “you two,” as contrasted with ge “you” referring to three or more. 1
- noun dual Consisting of two parts, elements, or aspects. 1
- adjective dual involving two 1
- noun Technical meaning of dual (mathematics) Every field of mathematics has a different meaning of dual. Loosely, where there is some binary symmetry of a theory, the image of what you look at normally under this symmetry is referred to as the dual of your normal things. In linear algebra for example, for any vector space V, over a field, F, the vector space of linear maps from V to F is known as the dual of V. It can be shown that if V is finite-dimensional, V and its dual are isomorphic (though no isomorphism between them is any more natural than any other). There is a natural embedding of any vector space in the dual of 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 to the scalar obtained by applying w to v. In short, this double-dual mapping simply exchanges the roles of function and argument. It is conventional, when talking about vectors in V, to refer to the members of V' as covectors. 1
- adjective dual composed or consisting of two people, items, parts, etc., together; twofold; double: dual ownership; dual controls on a plane. 0
Information block about the term
Origin of dual
First appearance:
before 1535 One of the 29% oldest English words
1535-45; < Latin duālis containing two, relating to a pair, equivalent to du(o) two + -ālis -al1
Historical Comparancy
Parts of speech for Dual
noun
adjective
verb
adverb
pronoun
preposition
conjunction
determiner
exclamation
dual popularity
A common word. It’s meaning is known to most children of preschool age. About 90% of English native speakers know the meaning and use the word.
Most Europeans know this English word. The frequency of it’s usage is somewhere between "mom" and "screwdriver".
dual usage trend in Literature
This diagram is provided by Google Ngram ViewerSynonyms for dual
adj dual
- binary — Binary describes something that has two different parts.
- double — twice as large, heavy, strong, etc.; twofold in size, amount, number, extent, etc.: a double portion; a new house double the size of the old one.
- duplex — duplex apartment.
- duplicate — a copy exactly like an original.
- twin — either of two children or animals brought forth at a birth.
adjective dual
noun dual
- bifurcation — the act or fact of bifurcating
- doublet — a close-fitting outer garment, with or without sleeves and sometimes having a short skirt, worn by men in the Renaissance.
- diremption — a sharp division into two parts; disjunction; separation.
- duplexity — duplex apartment.
- dyad — a group of two; couple; pair.
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