sanseiEtymologyBorrowed from Japanese 三世 (“third generation”), from 三 (san, “third”) + 世 (sei, “generation”).sansei means A grandchild of a Japanese immigrant to the Americas. Lexicurio rates it Rare gem — a strength score of 84 out of 100.nounA grandchild of a Japanese immigrant to the Americas.“Born and brought tip mostly in South America, the United States (particularly Hawaii) and Canada, the nisei and sansei have Japanese features but often speak the language imperfectly, if at all. “If you don't speak Japanese well,” one sansei said ruefully, “it's better to he white.””