always used before a noun
1
: having two different parts, uses, etc.
the dual purpose of the study
The song's lyrics have a dual [=(more commonly) double] meaning.
a dual function
She held dual citizenship in France and the United States. [=she was a citizen of both countries]
2
: having two of something
Our car has dual air bags. [=has two air bags]
She pursued dual careers in music and acting.
families with dual incomes
Cite this Entry
“Dual.” Merriam-Webster.com Simple Definition, Merriam-Webster, https://www.merriam-webster.com/simple/dual. Accessed 24 Jun. 2026.
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