\Al"ga*rot\, Algaroth \Al"ga*roth\, n. [F. algaroth, fr. the name of the inventor, Algarotti.] (Med.) A term used for the Powder of Algaroth, a white powder which is a compound of trichloride and trioxide of antimony. It was formerly used in medicine as an emetic, purgative, and diaphoretic.