Dual vs. Plural

Dualadjective

Exhibiting duality; characterized by having two (usually equivalent) components.

Pluraladjective

Consisting of or containing more than one of something. en

Dualadjective

Acting as a counterpart.

Pluraladjective

(comparable) Pluralistic.

Dualadjective

Double.

‘dual-headed computer’;

Pluralnoun

The plural number. In English, referring to more than one of something.

Dualadjective

(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.

Pluralnoun

A word in the form in which it potentially refers to something other than one person or thing; and other than two things if the language has a dual form.

‘The plural of 'cat' is 'cats', but the plural of 'child' is 'children'.’;

Dualadjective

(linear algebra) Being the space of all linear functionals of (some other space).

Pluraladjective

Relating to, or containing, more than one; designating two or more; as, a plural word.

‘Plural faith, which is too much by one.’;

Dualadjective

(category theory) Being the dual of (some other category); containing the same objects but with source and target reversed for all morphisms.

Pluralnoun

The plural number; that form of a word which expresses or denotes more than one; a word in the plural form.

Dualnoun

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

Pluralnoun

the form of a word that is used to denote more than one

Dualnoun

(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.’;

Pluraladjective

grammatical number category referring to two or more items or units

Dualnoun

(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.

Plural

The plural (sometimes abbreviated PL), in many languages, is one of the values of the grammatical category of number. The plural of a noun typically denotes a quantity greater than the default quantity represented by that noun.

Dualnoun

(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.

Dualverb

(transitive) To convert from single to dual; specifically, to convert a single-carriageway road to a dual carriageway.

Dualadjective

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

‘Here you have one half of our dual truth.’;

Dualadjective

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’;

Dualadjective

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’; ‘every episode has its double and treble meaning’;

Dualadjective

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’;

Dualadjective

consisting of two parts, elements, or aspects

‘dual-language texts in English and Italian’; ‘their dual role at work and home’;

Dualadjective

(in some languages) denoting an inflection that refers to exactly two people or things (as distinct from singular and plural).

Dualadjective

(in an aircraft) using dual controls

‘a dual flight’;

Dualadjective

(of a theorem, expression, etc.) related to another by the interchange of particular pairs of terms, such as ‘point’ and ‘line’.

Dualnoun

a dual form of a word.

Dualnoun

the dual number.

Dualnoun

a theorem, expression, etc., that is dual to another.

Dualverb

convert (a road) into a dual carriageway

‘though there are no plans to dual the road, a public consultation on the A64 is set to start before the end of the year’;