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Contracted or compressed so as to be smaller in certain places or parts than in others.

f internal-combustion engine in which the air drawn in by the suction stroke is so highly compressed that the heat generated ignites the fuel (usually crude oil), the fuel being automatically sprayed into the cylinder under pressure. The Diesel engine has a very high thermal efficiency.

shaped, in which men may descend and work under water, respiration being sustained by the compressed air at the top, by fresh air pumped in through a tube from above. -- Diving dress. See Submarine armor, under Submarine. -- Diving stone, a kind of jasper.

f naphthalene. They are stable, but require protection from moisture. As prepared it is a compressed cylinder of the explosive, filled with loose powder of the same composition, all inclosed in waterproof wrappers. It is used for mining.

Fixed; hence, closely compressed; compact; substantial; hard; solid; -- applied to the matter of bodies; as, firm flesh; firm muscles, firm wood.

The movable part of a stuffing box by which the packing is compressed; -- sometimes called a follower. See Illust. of Stuffing box, under Stuffing.

nal viscera in most common. Called also rupture. Strangulated hernia, a hernia so tightly compressed in some part of the channel through which it has been protruded as to arrest its circulation, and produce swelling of the protruded part. It may occur in recent or chronic hernia, but is more common in the latter.…

An extinct genus of sharks having conical, compressed teeth.

riage in which the recoil is checked by cylinders containing liquid and air, the air when compressed furnishing the power for restoring the gun to the firing position. It is used with some English and European heavy guns.

nd increment of animal and vegetable bodies. Woodward. A nation, to be great, ought to be compressed in its increment by nations more civilized than itself. Coleridge.

An insulating material, usually some variety of compressed cellulose, made of sawdust, paper pulp, cotton waste, etc.

John Doree, John Dory. Etym: [John (or F. jaune yellow) + Doree, Dory.] (Zoöl.) An oval, compressed, European food fish (Zeus faber). Its color is yellow and olive, with golden, silvery, and blue reflections. It has a round dark spot on each side. Called also dory, doree, and St. Peter's fish.

or the air engine proposed by Joule. In it air is taken by a pump from a cold chamber and compressed adiabatically until its pressure is eqal to that of the air in a hot chamber, into which it is then delivered, thereby displacing an equal amount of hot air into the engine cylinder. Here it expands adiabatically to the…

quantity of spores, forming a fine dust, which is thrown out like smoke when the plant is compressed or burst; puffball.

elation between one set of objects to another set for the purpose of brief explanation; a compressed simile; e. g., the ship plows the sea. Abbott & Seeley. "All the world's a stage." Shak.

Any of certain basslike marine fishes (mostly of tropical seas, and having a deep, compressed body, protracile mouth, and large silvery scales) constituting the family Gerridæ, as Gerres plumieri, found from Florida to Brazil and used as food. Also, any of numerous other fishes of similar appearance but belonging to ot…

er zibethicus). It resembles a rat in color and having a long scaly tail, but the tail is compressed, the bind feet are webbed, and the ears are concealed in the fur. It has scent glands which secrete a substance having a strong odor of musk. Called also musquash, musk beaver, and ondatra.

plane, in a beam under transverse pressure, at which the fibers are neither stretched nor compressed, or where the longitudinal stress is zero. See Axis. -- Neutral equilibrium (Mech.), the kind of equilibrium of a body so placed that when moved slighty it neither tends to return to its former position not depart more…

A high and narrow tank, with a central cylinder for the introduction of compressed air, used in the agitation and settling of pulp (pulverized ore and water) during treatment by the cyanide process; -- so named because, though originally devised in New Zealand, it was first practically introduced in Pachuca, Mexico.…

To admit of stowage, or of making up for transportation or storage; to become compressed or to settle together, so as to form a compact mass; as, the goods pack conveniently; wet snow packs well.