dual - Definition | Dictionary definition of dual

Definition of dual

consisting of or involving two parts or components usually in pairs

"dual controls for pilot and copilot"

Synonyms:: double, duple; multiple
having or involving or consisting of more than one part or entity or individual

having more than one decidedly dissimilar aspects or qualities

"a double (or dual) role for an actor"

Synonyms:: double, three-fold, threefold, treble, two-fold, twofold; multiple
having or involving or consisting of more than one part or entity or individual

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"

Synonyms:: plural
grammatical number category referring to two or more items or units