- Seidlitz powder, Seidlitz powders, Rochelle powder - an effervescing salt containing sodium bicarbonate and Rochelle salt and tartaric acid; used as a cathartic
--1 is a kind of purgative, cathartic, physic, aperient; purgative, cathartic, physic, aperient; purgative, cathartic, physic, aperient; purgative, cathartic, physic, aperient