Rochelle salt
noun Chemistry, Pharmacology.
a colorless or white, water-soluble solid, KNaC4H4O6⋅4H2O, used in silvering mirrors, in the manufacture of Seidlitz powders and baking powder, and in medicine as a laxative.
RELATED CONTENT
Why is the word “salt” flagged by China’s internet censors?Censorship is probably as old as language itself. Okay, maybe it’s not that old, but there were censorship laws in Ancient Greece and in Dynastic China more than 2,000 years ago. From the Latin verb censere meaning “to appraise, value or judge,” the word “censor” was first used to name the Roman official who oversaw public morals. How censorship is implemented, though, shifts over time. Today, …
Origin of Rochelle salt
First recorded in 1745–55; after La Rochelle
Also called potassium sodium tartrate.
Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Rochelle salt
noun
a white crystalline double salt, sodium potassium tartrate, used in Seidlitz powder. Formula: KNaC 4 H 4 O 6 .4H 2 O
Word Origin for Rochelle salt
C18: named after La Rochelle, French port
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Rochelle salt
[ rə-shĕl′, rō- ]
n.
potassium sodium tartrate
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.