リアス式しき海かい岸がんリアスしきかいがんFreq.FrequencyTop 100,000Meanings1nounria coastline; deeply indented coastlinegeography›A geographical term for a coastline formed by the submergence of river valleys, creating a jagged, deeply indented shoreline. Used in geography and earth science contexts.三さん陸りく海かい岸がんは典てん型
