水素すいそ Common Noun female given name or forename English jmdict 1 noun (common) (futsuumeishi) hydrogen (H) 酸素と水素から水ができる。 Oxygen and hydrogen make water. English jmnedict 1 Suiso
水素添加すいそてんか Noun Irregular English jmdict 1 noun (common) (futsuumeishi) noun or participle which takes the aux. verb suru hydrogenation See also: 水素化 (すいそか)