窒化ちっか Noun Irregular English jmdict 1 noun (common) (futsuumeishi) noun or participle which takes the aux. verb suru nitridization;nitriding 2 noun or verb acting prenominally chemistry nitride (of)
窒化ホウ素ちっかホウそ Noun English jmdict 1 noun (common) (futsuumeishi) chemistry boron nitride Other forms 窒化硼素 【ちっかホウそ】