Duality
/djuːˈælɪti/noun
The state or quality of being twofold or consisting of two parts.
Did you know?Its deepest root is PIE *dwo-* “two,” the same ancient number-line that also lives in words like two, twin, and twelve — proof that language has been building sacred opposites for millennia.
Etymological Timeline
Proto-Indo-European
PIE
*dwo-
“two”
Latin
Latin
duo
“two”
Latin
Latin
dualis
“consisting of two, twofold”
Middle English
English
dualite
“the condition of being twofold”
Modern English
English
duality
“the state or quality of being twofold or consisting of two parts”