Tur·peth n.  [Written also turbeth, and turbith.]
 1. Bot. The root of Ipomœa Turpethum, a plant of Ceylon, Malabar, and Australia, formerly used in medicine as a purgative; -- sometimes called vegetable turpeth.
 2. Chem. A heavy yellow powder, Hg3O2SO4, which consists of a basic mercuric sulphate; -- called also turpeth mineral.

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