Main Entry: ¹du·al

Pronunciation: \ˈdü(-ə)l also ˈdyü-əl\

Function: adjective

Etymology: Latin dualis, from duo two — more at two

Date: 1597

1 of grammatical number : denoting reference to two
2 a : consisting of two parts or elements or having two like parts : double b : having a double character or nature

— du·al·ly \-ə(l)-lē\ adverb