Platinum sponge Meaning, Definition & Usage

Definitions
  1. . (Chem.) See under Platinum.
Definitions
  1. (Chem.), metallic platinum in a gray, porous, spongy form, obtained by reducing the double chloride of platinum and ammonium. It absorbs oxygen, hydrogen, and certain other gases, to a high degree, and is employed as an agent in oxidizing.

Webster 1913