The Collaborative International Dictionary
Antimonial powder
Antimonial \An`ti*mo"ni*al\, a. Of or pertaining to antimony. -- n. (Med.) A preparation or medicine containing antimony.
Antimonial powder, a consisting of one part oxide of antimony and two parts phosphate of calcium; -- also called James's powder.
Wiktionary
antimonial powder
n. (context medicine English) A preparation of one part oxide of antimony and two parts phosphate of calcium.