Rochelle salt

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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.

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Also called potassium sodium tartrate.

Origin of Rochelle salt

First recorded in 1745–55; after La Rochelle

Words nearby Rochelle salt

roche alum, Roche limit, Rochelle, Rochelle powder, Rochelle powders, Rochelle salt, roche moutonnée, Rochester, rochet, rock, rockabilly

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use Rochelle salt in a sentence

Place the flour, baking soda, baking powder, and salt on parchment or wax paper.
Make ‘The Chew’s’ Carla Hall’s Sticky Toffee Pudding|Carla Hall|December 28, 2014|DAILY BEAST
Whisk in the half and half and season to taste with salt and pepper.
Make Carla Hall’s Crispy Shallot Green Bean Casserole|Carla Hall|December 27, 2014|DAILY BEAST
Bring a large pot of water to a boil and season liberally with salt.
Make Carla Hall’s Crispy Shallot Green Bean Casserole|Carla Hall|December 27, 2014|DAILY BEAST
Remove from heat and stir in the walnuts, rum, powdered sugar, and salt until fully incorporated.
Carla Hall’s Christmas Day Treat: Rum Balls|Carla Hall|December 25, 2014|DAILY BEAST

Rub the loin with olive oil, and season with salt and pepper.
Make Carla Hall’s Roasted Pork Loin With Cranberries|Carla Hall|December 24, 2014|DAILY BEAST
The Afghan was true to his salt, and their own retainers, who had come with them from Lucknow, remained steadfast at this crisis.
The Red Year|Louis Tracy
Robert Fitzgerald received a patent in England for making salt water fresh.
The Every Day Book of History and Chronology|Joel Munsell
The men arrived in very bad condition, and many of them blinded with the salt water which had dashed into their eyes.
The Philippine Islands, 1493-1898, Volume XX, 1621-1624|Various
He shall pour frost as salt upon the earth: and when it freezeth, it shall become like the tops of thistles.
The Bible, Douay-Rheims Version|Various
How still it was, with only the voice of the sea whispering through the reeds that grew in the salt-water pools!
The Awakening and Selected Short Stories|Kate Chopin

British Dictionary definitions for Rochelle salt

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