Definition of dual
(Entry 1 of 2)
1
of grammatical number
: denoting reference to two
a dual pronoun
2a
: consisting of two parts or elements or having two like parts : double
families with dual incomes held dual citizenship in France and the U.S. a dual function a dual exhaust system
b
: having a double character or nature
dual
nounDefinition of dual (Entry 2 of 2)
2
linguistics
: a linguistic form in the dual
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Merriam-Webster unabridged
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Time Traveler for dual
The first known use of dual was in 1597
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