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In gasoline-engine motor vehicles, the cooling of the cylinder by increasing its radiating surface by means of ribs or radiators, and placing it so that it is exposed to a current of air. Cf. Water cooling. -- Air"-cooled`, a.

A drill driven by the elastic pressure of condensed air; a pneumatic drill. Knight.

An engine driven by heated or by compressed air. Knight.

ischarge the ball. The air is powerfully compressed into a reservoir attached to the gun, by a condensing pump, and is controlled by a valve actuated by the trigger.

A fault in a casting, produced by a bubble of air; a blowhole.

A path through the air made easy for aërial navigation by steady winds.

A stove for heating a current of air which is directed against its surface by means of pipes, and then distributed through a building.

Slacked, or pulverized, by exposure to the air; as, air-slacked lime.

A lateral division of a building, separated from the middle part, called the nave, by a row of columns or piers, which support the roof or an upper wall containing windows, called the clearstory wall.

Of the same kin; related by blood; -- used of persons; as, the two families are near akin.

Divination by means of barley meal. Knowles.

hat translucent, or of banded shades of color; stalagmite. The name is used in this sense by Pliny. It is sometimes distinguished as oriental alabaster.

Sudden surprise with fear or terror excited by apprehension of danger; in the military use, commonly, sudden apprehension of being attacked by surprise. Alarm and resentment spread throughout the camp. Macaulay.

Aroused to vigilance; excited by fear of approaching danger; agitated; disturbed; as, an alarmed neighborhood; an alarmed modesty. The white pavilions rose and fell On the alarmed air. Longfellow.

xpressive of sorrow, pity, or apprehension of evil; -- in old writers, sometimes followed by day or white; alas the day, like alack a day, or alas the white.

en, reaching to the feet, an enveloping the person; -- in the Roman Catholic church, worn by those in holy orders when officiating at mass. It was formerly worn, at least by clerics, in daily life.

A white crystalline resinous substance extracted from gutta- percha by the action of alcohol or ether.

A picture printed from a kind of gelatine plate produced by means of a photographic negative.

A person, whether negro, Indian, or white, in whom by some defect of organization the substance which gives color to the skin, hair, and eyes is deficient or in a morbid state. An albino has a skin of a milky hue, with hair of the same color, and eyes with deep red pupil and pink or blue iris. The term is also used of…

Dung of dogs or hyenas, which becomes white by exposure to air. It is used in dressing leather, and was formerly used in medicine.