/ Dictionary / Index D dual: Meaning and Definition of Find definitions for: du•al Pronunciation: (d'ul, dy'-), [key] — adj. of, pertaining 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. 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. —n. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: dual (Thesaurus) duad Duala Related Content Daily Word Quiz: impetuous Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language