環かん状じょう山ざんMeanings1nouncrater (ring-shaped mountain)rare termRare term for a crater, especially in astronomical or geological contexts. More commonly expressed as クレーター.See also: クレーター月つきの表ひょう面めんには多おおくの環かん状じょう山ざんが見みられる。Many craters can be seen on the surface of the moon.