Search the Dictionary

A glucoside extracted from rhubarb as a bitter, yellow, crystalline powder, and yielding chrysophanic acid on decomposition.

Pertaining to, or derived from, or resembling, chrysophane. Chrysophanic acid (Chem.), a yellow crystalline substance extracted from rhubarb, yellow dock, sienna, chrysarobin, etc., and shown to be a derivative of an anthracene. It is used in the treatment of skin diseases; -- called also rhein, rheic acid, rhubarbarin…

A yellow crystalline substance, (C6H5.C2H2)2CO, the ketone of cinnamic acid.

hemy, the state of perfection in the philosopher's stone indicated by its assuming a deep yellow color. Thynne.

Like a citron or lemon; of a lemon color; greenish yellow. Citrine ointment (Med.), a yellowish mercurial ointment, the unquentum hydrargyri nitratis.

honey, taken from glands in the anal pouch of the civet (Viverra civetta). It is of clear yellowish or brownish color, of a strong, musky odor, offensive when undiluted, but agreeble when a small portion is mixed with another substance. It is used as a perfume.

h (Zoöl.), a small moth of the genus Tinea. The most common species (T. flavifrontella)is yellowish white. The larvæ eat woolen goods, furs, feathers, etc. They live in tubular cases made of the material upon which they feed, fastened together with silk.

g essentially of the oxides of cobalt and zinc; -- called also Rinman's green. -- Cobalt yellow (Chem.), a yellow crystalline powder, regarded as a double nitrite of cobalt and potassium.

nce; as, cobaltic oxide. Luteo-cobaltic compounds (Chem.), an extensive series of complex yellow compounds of ammonia and cobaltic salts. -- Roseo-cobaltic compounds (Chem.), an extensive series of complex red compounds of cobalt and ammonia. Modifications of these are the purpureo-cobaltic compounds.…

loid, C17H19NO5, extracted from the Colchicum autumnale, or meadow saffron, as a white or yellowish amorphous powder, with a harsh, bitter taste; -- called also colchicia.

bitter American herb of the Bloodwort family, with the leaves all radical, and the small yellow or white flowers in a long spike (Aletris farinosa and A. aurea). Called sometimes star grass, blackroot, blazing star, and unicorn root.

The active medicinal principle of colocynth; a bitter, yellow, crystalline substance, regarded as a glucoside.

A yellowish beetle (Doryphora decemlineata), with ten longitudinal, black, dorsal stripes. It has migrated eastwards from its original habitat in Colorado, and is very destructive to the potato plant; -- called also potato beetle and potato bug. See Potato beetle.

root. Columbic acid (Chem.), an organic acid extracted from the columbo root as a bitter, yellow, amorphous substance.

odule or cystic tumor, common on the nose, etc., which on pressure allows the escape of a yellow wormlike mass of retained oily secretion, with a black head (dirt).

is sometimes used instead of copper for sheathing vessels; -- also called Muntz metal and yellow metal. -- Composition of proportion (Math.), an arrangement of four proportionals so that the sum of the arrangement of four proportionals so that the sum of the third and fourth to the fourth.COMPOSITIVE Com*pos"i*tive, a…

te. See Breccia. A conglomerate, therefore, is simply gravel bound together by a cement. Lyell.

One who believes in the contagious character of certain diseases, as of yellow fever.

stone contrast finely with the divisional planes which separate the basalt into pillars. Lyell.

The yellowish, fragrant balsam yielded by the sweet gum; also, the tree itself.