瀬戸内海 せとないかい Meanings Noun Seto Inland Sea; Inland Sea Kanji 瀬 shallows. Read as せ. 戸 door 内 inside. Read as ナイ. 海 sea. Read as カイ. Words containing 瀬戸内海 瀬戸内海環境保全審議会 (せとないかいかんきょうほぜんしんぎかい) Seto Inland Sea Environmental Conservation Council Jinuma: Japanese Dictionary · Word lists