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A genus of euphorbiaceous plants belonging to tropical countries. Croton oil (Med.), a viscid, acrid, brownish yellow oil obtained from the seeds of Croton Tiglium, a small tree of the East Indies. It is a most powerful drastic cathartic, and is used externally as a pustulant.

A small, active, winged species of cockroach (Ectobia Germanica), the water bug. It is common aboard ships, and in houses in cities, esp. in those with hot-water pipes.

Of or pertaining to, or derived from, a plant of the genus Croton, or from croton oil. Crotonic acid (Chem.), a white crystalline organic acid, C3H5.CO2H, of the ethylene, or acrylic acid series. It was so named because formerly supposed to exist in croton oil. Also, any acid metameric with crotonic acid proper.…

A supposed alkaloid obtained from croton oil by boiling it with water and magnesia, since found to be merely a magnesia soap of the oil. Watts.

lly, and regarded as an unsaturated hydrocarbon of the acetylene series, and analogous to crotonic acid.

Same as Macron.

A euphorbiaceous West Indian shrub (Croton Eleutheria); also, its aromatic bark. Cascarilla bark (or Cascarila) (Med.), the bark of Croton Eleutheria. It has an aromatic odor and a warm, spicy, bitter taste, and when burnt emits a musky odor. It is used as a gentle tonic, and sometimes, for the sake of its fragrance, m…

h aromatic bark, used in medicine and perfumery, said to be from the South American shrub Croton Malambo.

A medicine that produces pustules, as croton oil.

Pertaining to, or designating, an acid of the acrylic acid series, metameric with crotonic acid, and obtained as a colorless liquid; -- so called from having four carbon atoms in the molecule. Called also isocrotonic acid.

Of, pertaining to, or designating, an acid, C4H7CO2H (called also methyl crotonic acid), homologous with crotonic acid, and obtained from croton oil (from Croton Tiglium) as a white crystalline substance.

The seeds of a small tree (Croton Pavana) common in the Malay Archipelago. These seeds furnish croton oil, like those of Croton Tiglium. [Written also tilly.]

The Croton bug.