What does dual mean?

Definitions for dualˈdu əl, ˈdyu-

Here are all the possible meanings and translations of the word dual.

Princeton's WordNet

  1. double, dual, duple(adj)

    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"

  2. double, dual, twofold, two-fold, treble, threefold, three-fold(adj)

    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 Harrison

  3. dual(adj)

    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"


  1. dual(Noun)

    Of an item that is one of a pair, the other item in the pair.

  2. dual(Noun)

    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. dual(Noun)

    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.

  4. dual(Noun)

    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.

  5. dual(Adjective)

    Characterized by having two (usually equivalent) components.

  6. dual(Adjective)


    dual-headed computer

  7. dual(Adjective)

    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.

  8. Origin: dualis, from duo, + adjective suffix -alis

Webster Dictionary

  1. Dual(adj)

    expressing, or consisting of, the number two; belonging to two; as, the dual number of nouns, etc. , in Greek

  2. Origin: [L. dualis, fr. duo two. See Two.]


  1. Dual

    Dual is a grammatical number that some languages use in addition to singular and plural. When a noun or pronoun appears in dual form, it is interpreted as referring to precisely two of the entities identified by the noun or pronoun. Verbs can also have dual agreement forms in these languages. The dual number existed in Proto-Indo-European, persisted in many of the now extinct ancient Indo-European languages that descended from it—Sanskrit, Ancient Greek and Gothic for example—and can still be found in a few modern Indo-European languages such as Scottish Gaelic, Slovenian, Sorbian, and Frisian. Many more modern Indo-European languages show residual traces of the dual, as in the English distinctions both vs. all, either vs. any, neither vs. none, and so on. Many Semitic languages also have dual number. For instance, in Arabic all nouns can have singular, plural, or dual forms. For non-broken plurals, masculine plural nouns end with ون -ūn and feminine plural nouns end with ات -āt, whilst ان -ān, is added to the end of a noun to indicate that it is dual.

Chambers 20th Century Dictionary

  1. Dual

    dū′al, adj. consisting of two.—ns. Dū′ad, a pair of objects looked at as one; Dū′al-control′, any joint control or jurisdiction, as of England and France in Egypt; Dū′alism (philos.), that view which seeks to explain the world by the assumption of two radically independent and absolute elements—e.g. (1) the doctrine of the entire separation of spirit and matter, thus being opposed both to idealism and to materialism; (2) the doctrine of two distinct principles of good and of evil, or of two distinct divine beings of these characters; Dū′alist, a believer in dualism.—adj. Dualis′tic, consisting of two: relating to dualism.—ns. Dual′ity, doubleness: state of being double; Dū′al-school, a school for both boys and girls; Dū′archy, government by two. [L.,—duo, two.]

Suggested Resources

  1. dual

    Song lyrics by dual -- Explore a large variety of song lyrics performed by dual on the Lyrics.com website.

  2. DUAL

    What does DUAL stand for? -- Explore the various meanings for the DUAL acronym on the Abbreviations.com website.

British National Corpus

  1. Adjectives Frequency

    Rank popularity for the word 'dual' in Adjectives Frequency: #943

Anagrams for dual »

  1. laud

  2. auld

  3. udal


  1. Chaldean Numerology

    The numerical value of dual in Chaldean Numerology is: 5

  2. Pythagorean Numerology

    The numerical value of dual in Pythagorean Numerology is: 2

Sample Sentences & Example Usage

  1. Chief Executive Ronny Verhelst:

    I can definitely rule out a dual track.

  2. Chief Executive Tony Fernandes:

    Looking at more ancillary (revenues), more capacity and dual listing.

  3. Wayne Lam:

    The dual cameras is definitely an enhancement and should vie for the title of best phone camera.

  4. Square Inc:

    ( The dual role) may at times adversely affect his ability to devote time, attention, and effort to Square Inc.

  5. Peter Dutton:

    There is a very significant penalty to pay if people are involved in terrorist activities and they're a dual national.

Images & Illustrations of dual

  1. dualdualdual

Translations for dual

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