南海トラフ巨大地震 なんかいトラフきょだいじしん Meanings Noun Nankai megathrust earthquake Kanji 南 south. Read as ナン. 海 sea. Read as カイ. 巨 huge. Read as キョ. 大 big. Read as ダイ. 地 land 震 quake. Read as シン. Jinuma: Japanese Dictionary · Word lists