Adjacent Words

Dual definitions

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Webster's 1828 Dictionary

DUAL, a. [L., two.] Expressing the number two; as the dual number in Greek.

WordNet (r) 3.0 (2005)

adj
1: 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" [syn: double, dual, duple]
2: 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 [syn: double, dual, twofold, two-fold, treble, threefold, three- fold]
3: 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"

Merriam Webster's

I. adjective Etymology: Latin dualis, from duo two — more at two Date: 1597 1. of grammatical number denoting reference to two 2. a. consisting of two parts or elements or having two like parts ; double b. having a double character or nature • dually adverb II. noun Date: 1650 1. the dual number of a language 2. a linguistic form in the dual

Oxford Reference Dictionary

adj., n., & v. --adj. 1 of two; twofold. 2 divided in two; double (dual ownership). 3 Gram. (in some languages) denoting two persons or things (additional to singular and plural). --n. (also dual number) Gram. a dual form of a noun, verb, etc. --v.tr. (dualled, dualling) Brit. convert (a road) into a dual carriageway. Phrases and idioms: dual carriageway Brit. a road with a dividing strip between the traffic in opposite directions. dual control (of a vehicle or an aircraft) having two sets of controls, one of which is used by the instructor. dual in-line package Computing see DIP. dual-purpose (of a vehicle) usable for passengers or goods. Derivatives: duality n. dualize v.tr. (also -ise). dually adv. Etymology: L dualis f. duo two

Webster's 1913 Dictionary

Dual Du"al, a. [L. dualis, fr. duo two. See Two.] 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. --Tyndall.

Collin's Cobuild Dictionary

Dual means having two parts, functions, or aspects. ...his dual role as head of the party and head of state... Rob may be entitled to dual nationality. ADJ: ADJ n

Moby Thesaurus

Janus-like, ambidextrous, bifacial, bifold, biform, bifurcated, bilateral, binary, binate, biparous, bipartisan, bipartite, bivalent, conduplicate, dichotomous, disomatous, double, double-barreled, double-faced, duadic, dualistic, duple, duplex, duplicate, duplicated, dyadic, geminate, geminated, identical, matched, paired, second, secondary, twain, twin, twinned, two, two-faced, two-level, two-ply, two-sided, two-story, twofold