Meanings
plural Rochelle salts
- chemistryThe double salt potassium sodium tartrate tetrahydrate (KNaC₄H₄O₆·4H₂O), used for various scientific and medical purposes.
In fact, at the current state of knowledge and technology, probably only the simplest of the structures she worked on in Cambridge, Rochelle salt, could have been fully solved at the time.
1998, Georgina Ferry, Dorothy Hodgkin: A LifeSynonyms: Seignette salt
Synonyms & antonyms
nounThe double salt potassium sodium tartrate tetrahydrate (KNaC₄H₄O₆·4H₂O), used for various scientific and medical purposes.
More synonyms by meaning
nouna double salt used in Seidlitz powder; acts as a cathartic
Synonym sets from Open English WordNet, CC BY 4.0.
Origin
From La Rochelle in France.
Full word history & related roots →Cite this entry
Rochelle salt. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/Rochelle%20salt
“Rochelle salt.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/Rochelle%20salt. Accessed November 4, 2026.
WatkinsX Dictionary, s.v. “Rochelle salt,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/Rochelle%20salt.
Source: Rochelle salt on Wiktionary, CC BY-SA 4.0.