duple
du·ple
adj \ˈdü-pəl also ˈdyü-\Definition of DUPLE
1
: having two elements
2
a : marked by two or a multiple of two beats per measure of music <duple time> b of rhythm : consisting of a meter based on disyllabic feet
See Origin of DUPLE
Latin duplus double — more at double
First Known Use: 15th century
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