陸海空 りくかいくう Meanings Noun land, sea and air army, navy and air force See also: 陸海空軍 (りくかいくうぐん). Kanji 陸 land. Read as リク. 海 sea. Read as カイ. 空 sky. Read as クウ. Words containing 陸海空 陸海空軍 (りくかいくうぐん) army, navy and air force Jinuma: Japanese Dictionary · Word lists