Thanks for using this online dictionary, we have been helping millions of people improve their use of the english language with its free online services. English definition of piston is as below...

Beam :: Beam (n.) A heavy iron lever having an oscillating motion on a central axis, one end of which is connected with the piston rod from which it receives motion, and the other with the crank of the wheel shaft; -- called also working beam or walking beam..

Forcer :: Forcer (n.) The solid piston of a force pump; the instrument by which water is forced in a pump.

Pallet :: Pallet (n.) One of the series of disks or pistons in the chain pump.

Throw :: Throw (n.) The extreme movement given to a sliding or vibrating reciprocating piece by a cam, crank, eccentric, or the like; travel; stroke; as, the throw of a slide valve. Also, frequently, the length of the radius of a crank, or the eccentricity of an eccentric; as, the throw of the crank of a steam engine is equal to half the stroke of the piston..

Inboard :: Inboard (a. & adv.) From without inward; toward the inside; as, the inboard stroke of a steam engine piston, the inward or return stroke..

Stroke :: Stroke (v. t.) The movement, in either direction, of the piston plunger, piston rod, crosshead, etc., as of a steam engine or a pump, in which these parts have a reciprocating motion; as, the forward stroke of a piston; also, the entire distance passed through, as by a piston, in such a movement; as, the piston is at half stroke..

Expansion :: Expansion (n.) The operation of steam in a cylinder after its communication with the boiler has been cut off, by which it continues to exert pressure upon the moving piston..

Indicator :: Indicator (n.) An instrument which draws a diagram showing the varying pressure in the cylinder of an engine or pump at every point of the stroke. It consists of a small cylinder communicating with the engine cylinder and fitted with a piston which the varying pressure drives upward more or less against the resistance of a spring. A lever imparts motion to a pencil which traces the diagram on a card wrapped around a vertical drum which is turned back and forth by a string connected with the pist

Play :: Play (n.) Motion; movement, regular or irregular; as, the play of a wheel or piston; hence, also, room for motion; free and easy action..

Condenser :: Condenser (n.) An instrument for condensing air or other elastic fluids, consisting of a cylinder having a movable piston to force the air into a receiver, and a valve to prevent its escape..

Chyometer :: Chyometer (n.) An instrument for measuring liquids. It consists of a piston moving in a tube in which is contained the liquid, the quantity expelled being indicated by the graduation upon the piston rod..

Pump :: Pump (n.) An hydraulic machine, variously constructed, for raising or transferring fluids, consisting essentially of a moving piece or piston working in a hollow cylinder or other cavity, with valves properly placed for admitting or retaining the fluid as it is drawn or driven through them by the action of the piston..

Lantern :: Lantern (n.) A kind of cage inserted in a stuffing box and surrounding a piston rod, to separate the packing into two parts and form a chamber between for the reception of steam, etc. ; -- called also lantern brass..

Force Pump :: Force pump () A pump having a solid piston, or plunger, for drawing and forcing a liquid, as water, through the valves; in distinction from a pump having a bucket, or valved piston..

Excursion :: Excursion () Length of stroke, as of a piston; stroke. [An awkward use of the word.].

Spider :: Spider (n.) A skeleton, or frame, having radiating arms or members, often connected by crosspieces; as, a casting forming the hub and spokes to which the rim of a fly wheel or large gear is bolted; the body of a piston head; a frame for strengthening a core or mold for a casting, etc..

Liner :: Liner (n.) A lining within the cylinder, in which the piston works and between which and the outer shell of the cylinder a space is left to form a steam jacket..

Distribution :: Distribution (n.) The steps or operations by which steam is supplied to and withdrawn from the cylinder at each stroke of the piston; viz., admission, suppression or cutting off, release or exhaust, and compression of exhaust steam prior to the next admission..

Cornopean :: Cornopean (n.) An obsolete name for the cornet-a-piston.

Clearance :: Clearance (n.) The distance by which one object clears another, as the distance between the piston and cylinder head at the end of a stroke in a steam engine, or the least distance between the point of a cogwheel tooth and the bottom of a space between teeth of a wheel with which it engages..

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