Is “Duality” a Scrabble word?
Yes
DUALITY
Valid in at least one Scrabble dictionary
Valid in these dictionaries
SOWPODS / CSW
Scrabble UK & International
TWL / NWL
Scrabble North America
Large English Dictionary
General English word list
Meaning of Duality
/d(j)uːˈælɪti/
noun
1.A classification into two subclasses or opposed parts.
2.(projective geometry) The interchangeability of points and planes.
3.The mathematical equivalence of two seemingly different theoretical descriptions of a physical system.
Synonyms: dichotomy