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d; interior; being within any limit or surface; inclosed; -- opposed to external; as, the internal parts of a body, or of the earth.

Designating, or pertaining to, any engine (called an Internal- combustion engine) in which the heat or pressure energy necessary to produce motion is developed in the engine cylinder, as by the explosion of a gas, and not in a separate chamber, as in a steam- engine boiler. The gas used may be a fixed gas, or one deriv…

The state of being internal or within; interiority.

Inwardly; within the enveloping surface, or the boundary of a thing; within the body; beneath the surface.

The act of increasing by natural growth; esp. the increase of organic bodies by the internal accession of parts; organic growth. Arbuthnot.

A mass of fat found internally; also, a fatty tumor. -- Ad`i*pom"a*tous, a.

divergence. Gray. Alternate alligation. See Alligation. -- Alternate angles (Geom.), the internal and angles made by two lines with a third, on opposite sides of it. It the parallels AB, CD, are cut by the line EF, the angles AGH, GHD, as also the angles BGH and GHC, are called alternate angles. -- Alternate generati…

Animals without a mouth or regular internal organs, as the sponges.

igure, when the sides are produced or lengthened. -- Facial angle. See under Facial. -- Internal angles, those which are within any right-lined figure. -- Mixtilineal angle, one formed by a right line with a curved line. -- Oblique angle, one acute or obtuse, in opposition to a right angle. -- Obtuse angle, one gr…

tion and the power of voluntary motion, and also characterized by taking its food into an internal cavity or stomach for digestion; by giving carbonic acid to the air and taking oxygen in the process of respiration; and by increasing in motive power or active aggressive force with progress to maturity.…

An order of holothurians in which the internal respiratory organs are wanting; -- called also Apoda or Apodes.

wells, wells made by boring into the earth till the instrument reaches water, which, from internal pressure, flows spontaneously like a fountain. They are usually of small diameter and often of great depth.

The internal parts of a flower, included within the calyx and the corolla. [Obs.] Johnson.

One whose thoughts take the form of mental sounds or of internal discourse rather than of visual or motor images.

Spontaneous or voluntary movement; movement due to an internal cause.

led vehicle suitable for use on a street or roadway. Automobiles are usually propelled by internal combustion engines (using volatile inflammable liquids, as gasoline or petrol, alcohol, naphtha, etc.), steam engines, or electric motors. The power of the driving motor varies from about 4 to 50 H. P. for ordinary vehicl…

spangled throughout with scales of yellow mica. ~= feldspar, a variety of oligoclase with internal firelike reflections due to the presence of minute crystals, probably of hematite; sunstone.

To have or experience a back fire or back fires; -- said of an internal-combustion engine.

ocone, prolonged, on one side, into a delicate concave blade; the thunderstone. It is the internal shell of a cephalopod related to the sepia, and belonging to an extinct family. The belemnites are found in rocks of the Jurassic and Cretaceous ages. -- Bel*em*nit"ic, a.

The internal cylindrical cavity of a gun, cannon, pistol, or other firearm, or of a pipe or tube. The bores of wind instruments. Bacon. Love's counselor should fill the bores of hearing. Shak.