| 1. | (Med.) Sulphate of magnesia having cathartic qualities; - originally prepared by boiling down the mineral waters at |
| Noun | 1. | Epsom salts - hydrated magnesium sulfate that is taken orally to treat heartburn and constipation and injected to prevent seizures Synonyms: bitter salts |
| 2. | Epsom salts - hydrated magnesium sulfate used as a laxative |