sansei
Concise Oxford English Dictionary © 2008 Oxford University Press:
sansei /ˈsanseɪ/
▶noun (pl. same) N. Amer. an American or Canadian whose grandparents immigrated from Japan. Compare with nisei and issei.
– origin 1940s: Japanese, from san ‘third’ + sei ‘generation’.
'sansei' also found in these Oxford entries:

