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Provided with trunnions; as, the trunnioned cylinder of an oscillating steam engine.

bivalve mollusk. Capillary tube, a tube of very fine bore. See Capillary. -- Fire tube (Steam Boilers), a tube which forms a flue. -- Tube coral. (Zoöl.) Same as Tubipore. -- Tube foot (Zoöl.), one of the ambulacral suckers of an echinoderm. -- Tube plate, or Tube sheet (Steam Boilers), a flue plate. See under Flue…

composed wholly of tubulous florets; as, a tubulous compound flower. Tubulous boiler, a steam boiler composed chiefly of tubes containing water and surrounded by flame and hot gases; -- sometimes distinguished from tubular boiler.

A small, powerful steamboat used to tow vessels; -- called also steam tug, tugboat, and towboat.

se to flow by turning a valve, stopcock, or the like; to give passage to; as, to turn on steam. -- To turn one's coat, to change one's uniform or colors; to go over to the opposite party. -- To turn one's goods or money, and the like, to exchange in the course of trade; to keep in lively exchange or circulation; to g…

A narrow superstructure running from stem to stern on the upper deck of a steam cargo vessel having a rounded gunwale and sides curved inward convexly.

as pretty, fragrant, pendulous flowers borne in pairs on a slender stalk. -- Twin-screw steamer, a steam vessel propelled by two screws, one on either side of the plane of the keel.

oved or propelled by sails; -- said of any vessel with her sail set, but especially of a steamer using her sails only, as distinguished from one under steam. Under steam and canvas signifies that a vessel is using both means of propulsion. (b) (Mil.) Provided with, or sheltered in, tents. -- Under fire, exposed to an…

The pipe leading upward from the smoke box of a steam boiler to the chimney, or smokestack; a flue leading upward.

r reduction of pressure below that of the atmosphere, in a vessel, as the condenser of a steam engine, which is nearly exhausted of air or steam, etc.; as, a vacuum of 26 inches of mercury, or 13 pounds per square inch. Vacuum brake, a kind of continuous brake operated by exhausting the air from some appliance under ea…

uilibrium valve. (a) A balance valve. See under Balance. (b) A valve for permitting air, steam, water, etc., to pass into or out of a chamber so as to establish or maintain equal pressure within and without. -- Valve chest (Mach.), a chamber in which a valve works; especially (Steam Engine), the steam chest; -- called…

apor engine, an engine worked by the expansive force of a vapor, esp. a vapor other than steam.

Existing in a vaporous form or state; as, steam is a vaporiform substance.

nto vapor; the artificial formation of vapor; specifically, the conversion of water into steam, as in a steam boiler.

, as by the application of heat, whether naturally or artificially. Vaporizing surface. (Steam Boilers) See Evaporating surface, under Evaporate, v. t.

wise variable. Shak. His heart, I know, how variable and vain! Milton. Variable exhaust (Steam Eng.), a blast pipe with an adjustable opening. -- Variable quantity (Math.), a variable. -- Variable stars (Astron.), fixed stars which vary in their brightness, usually in more or less uniform periods.

A mountain or hill, usually more or less conical in form, from which lava, cinders, steam, sulphur gases, and the like, are ejected; -- often popularly called a burning mountain.

An inclosing part of a receptacle or vessel; as, the walls of a steam-engine cylinder.

The backward current or disturbed water caused by the action of oars, or of a steamer's screw or paddles, etc.

Capable of being washed off; not permanent or durable; -- said of colors not fixed by steaming or otherwise.