d(y)üˈaləd.ē, -ətē, -i noun
( -es )
Etymology: Middle English dualitie, from Middle French dualité, from Late Latin dualitat-, dualitas, from Latin dualis dual + -itat-, -itas -ity — more at dual
: the quality or state of being dual or of being made up of two elements or aspects : doubleness , dichotomy
he was amused by the eternal duality of truth and fiction — John Fountain
a deep duality was introduced between morality and the life of impulse — Bertrand Russell
— see principle of duality