Definify.com

Webster 1913 Edition

Duality

Du′al′i-ty

,
Noun.
[L.
dualitas
: cf. F.
dualité
.]
The quality or condition of being two or twofold; dual character or usage.

Webster 1828 Edition

Duality

DUALITY

,
Noun.
1.
That which expresses two in number.
2.
Division; separation.
3.
The state or quality of being two.

Similar Results