noun
: metallic platinum in a gray porous spongy form that is obtained by reducing ammonium chloroplatinate, that occludes large volumes of oxygen, hydrogen, and other gases, and that is used as a catalyst
noun
: metallic platinum in a gray porous spongy form that is obtained by reducing ammonium chloroplatinate, that occludes large volumes of oxygen, hydrogen, and other gases, and that is used as a catalyst
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012