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Meaning of dual

du•al

Pronunciation: (d'ul, dy'-), [key]
— adj.
  1. of, pertaining to, or noting two.
  2. composed or consisting of two people, items, parts, etc., together; twofold; double: dual ownership; dual controls on a plane.
  3. having a twofold, or double, character or nature.
  4. 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.
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