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aromatic umbelliferous plant (Archangelica officinalis or Angelica archangelica) the leaf stalks of which are sometimes candied and used in confectionery, and the roots and seeds as an aromatic tonic.

A native sulphate of lead. It occurs in white or yellowish transparent, prismatic crystals.

Not isometric; having unsymmetrical parts; -- said of crystals with three unequal axes. Dana.

Not isotropic; having different properties in different directions; thus, crystals of the isometric system are optically isotropic, but all other crystals are anisotropic.

Having unequal oblique axes; as, anorthic crystals.

A mineral of the feldspar family, commonly occurring in small glassy crystals, also a constituent of some igneous rocks. It is a lime feldspar. See Feldspar.

ry name or character; -- opposed to analogous. Antilogous pole (Eccl.), that pole of a crystal which becomes negatively electrified when heated.

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.

To lose flavor or become stale. [Obs.]

Any tree genus Pyrus which has the stalk sunken into the base of the fruit; an apple tree.

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.

Bent or curved in the form of a bow. "Arcuate stalks." Gray.

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.]