an.hy.driten.(名词)A colorless, white, gray, blue, or lilac mineral of anhydrous calcium sulfate, CaSO4, occurring as layers in gypsum deposits. 硬石膏,无水石膏:一种无色,白色,灰色,蓝色或淡紫色无水硫酸钙矿物,CaSO4,出现在石膏沉积岩层中 来源:anhydr(ous) anhydr(ous)-ite -ite