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An artificial, yellow, crystalline dye, C6H5N2.C6H3(NH2)2. Also, one of a group of dyestuffs resembling chrysoïdine proper.

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

g 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, etc.…

er. "A peasant or churl." Spenser. Your rank is all reversed; let men of cloth Bow to the stalwart churls in overalls. Emerson.

f the quinine group of alkaloids, found especially in red cinchona bark. It is a white crystalline substance, C19H22N2O, with a bitter taste and qualities similar to, but weaker than, quinine; -- sometimes called also cinchonidia.

Red sulphide of mercury, occurring in brilliant red crystals, and also in red or brown amorphous masses. It is used in medicine.

Pertaining to, or obtained from, cinnamon. Cinnamic acid (Chem.), a white, crystalline, odorless substance. C6H5.C2H2C2H2.CO2H, formerly obtained from storax and oil of cinnamon, now made from certain benzene derivatives in large quantities, and used for the artificial production of indigo.

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

rtain characteristics of, citric and aconitic acids. Citraconic acid (Chem.), a white, crystalline, deliquescent substance, C3H4(CO2H)2, obtained by distillation of citric acid. It is a compound of the ethylene series.

c acid, C3H4OH.(CO2H)3, extracted from lemons, currants, gooseberies, etc., as a white crystalline substance, having a pleasant sour taste.

Clearness; brightness; splendor. Floods, in whose more than crystal clarity, Innumerable virgin graces row. Beaumont.

The quality possessed by many crystallized substances of splitting readily in one or more definite directions, in which the cohesive attraction is a minimum, affording more or less smooth surfaces; the direction of the dividing plane; a fragment obtained by cleaving, as of a diamond. See Parting.

That diagonal or lateral axis in a monoclinic crystal which makes an oblique angle witch the vertical axis. See Crystallization. -- a.

Pertaining to the oblique crystalline forms, or to solids which have oblique angles between the axes; as, the clinometric systems.

The plane in crystals of the monoclinic system which is parallel to the vertical and the inclined lateral (clinidiagonal) axes.

Dwelling in cloisters; solitary. "Cloistered friars and vestal nuns." Hudibras. In cloistered state let selfish sages dwell, Proud that their heart is narrow as their cell. Shenstone.

estroys the seeds of clover. -- Clover worm (Zoöl.), the larva of a small moth (Asopia costalis), often very destructive to clover hay. -- In clover, in very pleasant circumstances; fortunate. [Colloq.] - - Sweet clover. See Meliot.

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.

p. of cobalt compounds in which the metal has its lower valence. Cobaltous chloride, a crystalline compound, CoCl2, of a pale rose color when hydrous, blue when dehydrated. Its solution is used for a sympathetic ink, the writing being nearly colorless when dried in the air, owing to absorbed moisture, and becoming brig…

powerful alkaloid, C17H21NO4, obtained from the leaves of coca. It is a bitter, white, crystalline substance, and is remarkable for producing local insensibility to pain.