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An anomalous state of refraction caused by the absence of the crystalline lens, as after operations for cataract. The remedy is the use of powerful convex lenses. Dunglison.

A crystalline alkaloid obtained from morphia. It is a powerful emetic.

or (Anat.), one the humors of the eye; a limpid fluid, occupying the space between the crystalline lens and the cornea. (See Eye.) -- Aqueous rocks (Geol.), those which are deposited from water and lie in strata, as opposed to volcanic rocks, which are of igneous origin; -- called also sedimentary rocks.…

entical in composition with calcite or carbonate of lime, but differing from it in its crystalline form and some of its physical characters.

The state of being arborescent; the resemblance to a tree in minerals, or crystallizations, or groups of crystals in that form; as, the arborescence produced by precipitating silver.

Resembling a tree; becoming woody in stalk; dendritic; having crystallizations disposed like the branches and twigs of a tree. "Arborescent hollyhocks." Evelyn.

A crystallized substance, resembling camphor, obtained from the Asarum Europæum; -- called also camphor of asarum.

A white, nitrogenous, crystallizable substance, C4H8N2O3+H2O, found in many plants, and first obtained from asparagus. It is believed to aid in the disposition of nitrogenous matter throughout the plant; -- called also altheine.

A white crystalline compound of acetyl and salicylic acid used as a drug for the salicylic acid liberated from it in the intestines.

An apportionment of a subscription for stock into successive installments; also, one of these installments (in England termed a "call"). [U. S.]

A poisonous, white, crystallizable alkaloid, extracted from the Atropa belladonna, or deadly nightshade, and the Datura Stramonium, or thorn apple. It is remarkable for its power in dilating the pupil of the eye. Called also daturine.

A hydrous carbonate of copper and zinc, found in pale green or blue crystalline aggregations. It yields a kind of brass on reduction.

A crystalline globulin, contained in oat kernels, very similar in composition to excelsin, but different in reactions and crystalline form.

eet; to shun; to abstain from; as, to avoid the company of gamesters. What need a man forestall his date of grief. And run to meet what he would most avoid Milton. He carefully avoided every act which could goad them into open hostility. Macaulay.

A division for the stalls of an open stable.

A white, crystalline substance,

A mineral of a white or gray color, occurring massive or crystallized. It is a compound of the carbonates of barium and calcium.

elating to, or forming, the base. Basal cleavage. See under Cleavage. -- Basal plane (Crystallog.), one parallel to the lateral or horizontal axis.

The ground mass of a rock, especially if not distinctly crystalline.

Said of crystalline rocks which contain a relatively low percentage of silica, as basalt. Basic salt (Chem.), a salt formed from a base or hydroxide by the partial replacement of its hydrogen by a negative or acid element or radical.