Is “Quincentennial” a Scrabble word?
Yes
QUINCENTENNIAL
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 Quincentennial
noun
1.A 500th anniversary.
adjective
1.Relating to a 500th anniversary.