Is “Zillion” a Scrabble word?
Yes
ZILLION
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 Zillion
/ˈzɪljən/
noun
1.An unspecified large number (of); a gazillion.