from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. Operculina turpethum, a plant in the morning glory family.
- n. A heavy yellow powder with chemical formula Hg3O2SO4.
from the GNU version of the Collaborative International Dictionary of English
- n. The root of Ipomœa Turpethum, a plant of Ceylon, Malabar, and Australia, formerly used in medicine as a purgative; -- sometimes called vegetable turpeth.
- n. A heavy yellow powder, Hg3O2SO4, which consists of a basic mercuric sulphate; -- called also turpeth mineral.
from The Century Dictionary and Cyclopedia
- n. The root of Ipomæa (Convolvulus) Turpethum, a plant of Ceylon, Malabar, and Australia, which has a cathartic property. (See Indian jalap, under jalap.) It is sometimes called vegetable turpeth to distinguish it from mineral turpeth.
- n. Turpeth-mineral.—
Ultimately from Persian. (Wiktionary)