(1)酸素と湿気の作用で鉄や鋼鉄の表面に生じる、赤色または茶色の酸化物
(2)植物の中でサビ病を引き起こす菌類
(3)any of various fungi causing rust disease in plants
(4)a red or brown oxide coating on iron or steel caused by the action of oxygen and moisture
さらに詳しく
