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dual

[ doo-uhl, dyoo- ]
/ ˈdu əl, ˈdyu- /
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See synonyms for: dual / duals on Thesaurus.com

adjective
of, relating to, or noting two.
composed or consisting of two people, items, parts, etc., together; twofold; double: dual ownership;dual controls on a plane.
having a twofold, or double, character or nature.
Grammar. being or pertaining to a member of the category of number, as in Old English, Old Russian, or Arabic, that denotes two of the things in question.
noun Grammar.
the dual number.
a form in the dual, as Old English git “you two,” as contrasted with ge “you” referring to three or more.
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Origin of dual

First recorded in 1535–45; from Latin duālis “containing two, relating to a pair,” equivalent to du(o) two + -ālis -al1

OTHER WORDS FROM dual

du·al·ly, adverb

WORDS THAT MAY BE CONFUSED WITH dual

dual , duel
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2022

How to use dual in a sentence

British Dictionary definitions for dual

dual
/ (ˈdjuːəl) /

adjective
relating to or denoting two
twofold; double
(in the grammar of Old English, Ancient Greek, and certain other languages) denoting a form of a word indicating that exactly two referents are being referred to
maths logic (of structures or expressions) having the property that the interchange of certain pairs of terms, and usually the distribution of negation, yields equivalent structures or expressions
noun
grammar
  1. the dual number
  2. a dual form of a word
verb duals, dualling or dualled
(tr) British to make (a road) into a dual carriageway

Derived forms of dual

dually, adverb

Word Origin for dual

C17: from Latin duālis concerning two, from duo two
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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