Is “Issei” a Scrabble word?
Yes
ISSEI
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 Issei
noun
1.A member of the first generation of Japanese immigrants to North America, South America or Australia.