石せっけん石せきせっけんせきMeanings1nounsoapstoneA soft metamorphic rock composed mainly of talc, used for carving and as an industrial material.石せっけん石せきは柔やわらかくて彫ちょう刻こくしやすい。Soapstone is soft and easy to carve.理り科かの実じっ験けんで石せっけん石せきの粉ふん末まつを使つかった。We used soapstone powder in the science experiment.
