Salts of lemon

(Chem.) a white crystalline substance, inappropriately named, as it consists of an acid potassium oxalate and contains no citric acid, which is the characteristic acid of lemon; - called also salts of sorrel. It is used in removing ink stains. See Oxalic acid, under Oxalic.

See also: Lemon

Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.
References in periodicals archive ?
The Birmingham Post, September 1952100 Years Ago Elizabeth Inshaw (24), of 5 Arston Road, was charged with attempting to commit suicide by taking salts of lemon in her tea.
Nellie Hodson (18) was charged with attempting to commit suicide by swallowing salts of lemon. The girl was found lying prostrate in a yard adjoining a house at which she was employed as a servant in Smith Street.