DICT.TW Dictionary Taiwan
slide rule
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Slide, n.
1. The act of sliding; as, a slide on the ice.
2. Smooth, even passage or progress.
A better slide into their business. --Bacon.
3. That on which anything moves by sliding. Specifically: (a) An inclined plane on which heavy bodies slide by the force of gravity, esp. one constructed on a mountain side for conveying logs by sliding them down. (b) A surface of ice or snow on which children slide for amusement.
4. That which operates by sliding. Specifically: (a) A cover which opens or closes an aperture by sliding over it. (b) Mach. A moving piece which is guided by a part or parts along which it slides. (c) A clasp or brooch for a belt, or the like.
5. A plate or slip of glass on which is a picture or delineation to be exhibited by means of a magic lantern, stereopticon, or the like; a plate on which is an object to be examined with a microscope.
6. The descent of a mass of earth, rock, or snow down a hill or mountain side; as, a land slide, or a snow slide; also, the track of bare rock left by a land slide.
7. Geol. A small dislocation in beds of rock along a line of fissure.
8. Mus. (a) A grace consisting of two or more small notes moving by conjoint degrees, and leading to a principal note either above or below. (b) An apparatus in the trumpet and trombone by which the sounding tube is lengthened and shortened so as to produce the tones between the fundamental and its harmonics.
9. Phonetics A sound which, by a gradual change in the position of the vocal organs, passes imperceptibly into another sound.
10. Steam Engine (a) Same as Guide bar, under Guide. (b) A slide valve.
Slide box Steam Engine, a steam chest. See under Steam.
Slide lathe, an engine lathe. See under Lathe.
Slide rail, a transfer table. See under Transfer.
Slide rest Turning lathes, a contrivance for holding, moving, and guiding, the cutting tool, made to slide on ways or guides by screws or otherwise, and having compound motion.
Slide rule, a mathematical instrument consisting of two parts, one of which slides upon the other, for the mechanical performance of addition and subtraction, and, by means of logarithmic scales, of multiplication and division.
Slide valve. (a) Any valve which opens and closes a passageway by sliding over a port. (b) A particular kind of sliding valve, often used in steam engines for admitting steam to the piston and releasing it, alternately, having a cuplike cavity in its face, through which the exhaust steam passes. It is situated in the steam chest, and moved by the valve gear. It is sometimes called a D valve, -- a name which is also applied to a semicylindrical pipe used as a sliding valve.
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Slid·ing a.
1. That slides or slips; gliding; moving smoothly.
2. Slippery; elusory. [Obs.]
That sliding science hath me made so bare. --Chaucer.
Sliding friction Mech., the resistance one body meets with in sliding along the surface of another, as distinguished from rolling friction.
Sliding gunter Naut., a topmast arranged with metallic fittings so as to be hoisted and lowered by means of halyards.
Sliding keel Naut, a movable keel, similar to a centeboard.
Sliding pair. Mech. See the Note under Pair, n., 7.
Sliding rule. Same as Slide rule, under Slide, n.
Sliding scale. (a) A scale for raising or lowering imposts in proportion to the fall or rise of prices. (b) A variable scale of wages or of prices. (c) A slide rule.
Sliding ways Naut., the timber guides used in launching a vessel.
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slide rule
n : analog computer consisting of a handheld instrument used for
rapid calculations; have been replaced by pocket
calculators [syn: slipstick]