1
of grammatical number
: denoting reference to two
a dual pronoun
2
a
: 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
1
linguistics
: the dual (see dual entry 1 sense 1) number of a language
2
linguistics
: a linguistic form in the dual
Cite this Entry
“Dual.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/dual. Accessed 5 Aug. 2026.
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