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Increase in height; elevation; rise. Little River affords navigation during a swell to within three miles of the Miami. Jefferson.

er of derailment of trains. -- Switch back (Railways), an arrangement of tracks whereby elevations otherwise insurmountable are passed. The track ascends by a series of zigzags, the engine running alternately forward and back, until the summit is reached. -- Switch board (Elec.), a collection of switches in one piece…

ral parapodia of tubicolous annelids. It usually has the form of an oblong thickening or elevation of the integument with rows of uncini or hooks along the center. See Illust. under Tubicolæ.

High flight; elevation. [Obs.] Johnson. Gay Lussac's tower (Chem.), a large tower or chamber used in the sulphuric acid process, to absorb (by means of concentrated acid) the spent nitrous fumes that they may be returned to the Glover's tower to be reemployed. See Sulphuric acid, under Sulphuric, and Glover's tower, be…

Elevation above truth; exaggeration. [Obs.] "Where transcendencies are more allowed." Bacon.

es (Mil.), to begin to dig or to form the lines of approach. Trench cavalier (Fort.), an elevation constructed (by a besieger) of gabions, fascines, earth, and the like, about half way up the glacis, in order to discover and enfilade the covered way. -- Trench plow, or Trench plough, a kind of plow for opening land to…

A genus of Lower Silurian trilobites in which the glabella and cheeks form three rounded elevations on the head.

A boss, or rounded elevation, or a corresponding depression, in a palate, disk, or membrane; as, the umbo in the integument of the larvæ of echinoderms or in the tympanic membrane of the ear.

Formed with elevations and depressions resembling waves; having wavelike color markings; as, an undulated shell.

ersal dial, a dial by which the hour may be found in any part of the world, or under any elevation of the pole. -- Universal instrument (Astron.), a species of altitude and azimuth instrument, the peculiarity of which is, that the object end of the telescope is placed at right angles to the eye end, with a prism of to…

an upright, or nearly upright, position; standing; mounted on a horse; in a condition of elevation, prominence, advance, proficiency, excitement, insurrection, or the like; -- used with verbs of rest, situation, condition, and the like; as, to be up on a hill; the lid of the box was up; prices are up. And when the sun…

The act of upheaving, or the state of being upheaved; esp., an elevation of a portion of the earth's crust. Lubbock.

Wormlike in shape; covered with wormlike elevations; marked with irregular fine lines of color, or with irregular wavy impressed lines like worm tracks; as, a vermiculate nut.

(Zoöl.) A wartlike elevation or roughness.

Covered with wartlike elevations; tuberculate; warty; verrucous; as, a verrucose capsule.

ical angle (Astron. & Geod.), an angle measured on a vertical circle, called an angle of elevation, or altitude, when reckoned from the horizon upward, and of depression when downward below the horizon. -- Vertical anthers (Bot.), such anthers as stand erect at the top of the filaments. -- Vertical circle (Astron.),…

An elevation, or crest, in the wall of the urethra where the seminal ducts enter it.

A small, and more or less circular, elevation of the cuticle, containing a clear watery fluid.

), a marine univalve shell (Ovulum verrucosum), having the surface covered with wartlike elevations.