rochelle powder

World English Dictionary
Rochelle powder (rɒˈʃɛl)
 
n
another name for Seidlitz powder
 
[C18: named after La Rochelle, French port]

Collins English Dictionary - Complete & Unabridged 10th Edition
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WordNet
rochelle powder

noun
an effervescing salt containing sodium bicarbonate and Rochelle salt and tartaric acid; used as a cathartic [syn: Seidlitz powder
WordNet® 3.0, © 2006 by Princeton University.
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