Third Generation
noun
The three generation is the third generation. Depending on the context, you can sometimes use this alone to say you're third generation Japanese. Usually, though, you'll want to specify whether you're third generation Japanese or another nationality.
さんせい
This is a jukugo word, which usually means on'yomi readings from the kanji. If you know the readings of your kanji you'll know how to read this as well.
このスクールには三世の子がたくさんいます。
There are many third-generation children in this school.
三世のほとんどはシアトル市生まれです。
Most third-generation people were born in Seattle.
これは、三世のアイデンティティーについての本です。
This book is about the identity of the third generation.