Dual vs. Duel

Dualadjective

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

Dualadjective

Acting as a counterpart.

Dualadjective

Double.

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.

Dualadjective

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

Dualadjective

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

Dualnoun

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

Dualnoun

(geometry) Of a regular polyhedron with V vertices and F faces, the regular polyhedron having F vertices and V faces.

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.

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.

Dualadjective

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

Dualadjective

having more than one decidedly dissimilar aspects or qualities;

Dualadjective

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

Dualadjective

consisting of two parts, elements, or aspects

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

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

Duelnoun

Arranged, regular combat between two private persons, often over a matter of honor.

Duelnoun

Historically, the wager of battle (judicial combat)

Duelnoun

Any struggle between two contending persons, groups or ideas.

Duelverb

To engage in a battle.

Duelnoun

A combat between two persons, fought with deadly weapons, by agreement. It usually arises from an injury done or an affront given by one to the other.

Duelverb

To fight in single combat.

Duelnoun

a prearranged fight with deadly weapons by two people (accompanied by seconds) in order to settle a quarrel over a point of honor

Duelnoun

any struggle between two skillful opponents (individuals or groups)

Duelverb

fight a duel, as over one's honor or a woman;

Duelnoun

a contest with deadly weapons arranged between two people in order to settle a point of honour

Duelnoun

(in modern use) a contest between two parties

Duelverb

fight a duel or duels

Duel

A duel is an arranged engagement in combat between two people, with matched weapons, in accordance with agreed-upon rules. During the 17th and 18th centuries (and earlier), duels were mostly fought with swords (the rapier, and later the small sword), but beginning in the late 18th century in England, duels were more commonly fought using pistols.