verb (used without object), slid [slid] , slid or slidden [slid-n] , sliding.
to move along in continuous contact with a smooth or slippery surface: to slide down a snow-covered hill.
to slip or skid.
to glide or pass smoothly.
to slip easily, quietly, or unobtrusively on or as if on a track, channel, or guide rail (usually followed by in, out, away, etc.).
to pass or fall gradually into a specified state, character, practice, etc.
to decline or decrease: Interest rates are beginning to slide.
Baseball. (of a base runner) to cast oneself, usually feet first, forward along the ground in the direction of the base being approached, to present less of a target for a baseman attempting to make a tag.
verb (used with object), slid [slid] , slid or slidden [slid-n] , sliding.
to cause to slide, slip, or coast, as over a surface or with a smooth, gliding motion.
to hand, pass along, or slip (something) easily or quietly (usually followed by in, into, etc.): to slide a note into someone's hand.
an act or instance of sliding.
a smooth surface for sliding on, especially a type of chute in a playground.
an object intended to slide.
a landslide or the like.
the mass of matter sliding down.
a single transparency, object, or image for projection in a projector, as a lantern slide.
Photography. a small positive color transparency mounted for projection on a screen or magnification through a viewer.
a usually rectangular plate of glass on which objects are placed for microscopic examination.
Furniture. a shelf sliding into the body of a piece when not in use.
an embellishment consisting of an upward or downward series of three or more tones, the last of which is the principal tone.
a portamento.
a U -shaped section of the tube of an instrument of the trumpet class, as the trombone, that can be pushed in or out to alter the length of the air column and change the pitch.
a vehicle mounted on runners, for conveying loads, as of grain or wood, especially over a level surface.
a moving part working on a track, channel, or guide rails.
the surface, track, channel, or guide rails on which the part moves.
any of various chutes used in logging, mining, or materials handling.
a flat or very low-heeled, backless shoe or slipper that can be slipped on and off the foot easily.
let slide, to allow to deteriorate, pursue a natural course, etc., without intervention on one's part: to let things slide.

before 950; Middle English sliden (v.), Old English slīdan; cognate with Middle Low German slīden, Middle High German slīten; akin to sled

slidable, adjective
slidableness, noun
outslide, verb (used with object), outslid, outslid or outslidden, outsliding.

1. slither. Slide, glide, slip suggest movement over a smooth surface. Slide suggests a movement of one surface over another in contact with it: to slide downhill. Glide suggests a continuous, smooth, easy, and (usually) noiseless motion: a skater gliding over the ice. To slip is to slide in a sudden or accidental way: to slip on the ice and fall.
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Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
slide (slaɪd)
vb (usually foll by into) (foll by in, into, etc) , slides, sliding, slid, slid, slidden
1.  to move or cause to move smoothly along a surface in continual contact with it: doors that slide open; children sliding on the ice
2.  (intr) to lose grip or balance: he slid on his back
3.  (intr; usually foll by into, out of, away from, etc) to pass or move gradually and unobtrusively: she slid into the room
4.  to go (into a specified condition) by degrees, unnoticeably, etc: he slid into loose living
5.  to move (an object) unobtrusively or (of an object) to move in this way: he slid the gun into his pocket
6.  (intr) music to execute a portamento
7.  let slide to allow to follow a natural course, esp one leading to deterioration: to let things slide
8.  the act or an instance of sliding
9.  a smooth surface, as of ice or mud, for sliding on
10.  a construction incorporating an inclined smooth slope for sliding down in playgrounds, etc
11.  rowing a sliding seat in a boat or its runners
12.  a thin glass plate on which specimens are mounted for microscopic study
13.  Also called: transparency a positive photograph on a transparent base, mounted in a cardboard or plastic frame or between glass plates, that can be viewed by means of a slide projector
14.  chiefly (Brit) Also called: hair slide, US and Canadian name: barrette an ornamental clip to hold hair in place
15.  machinery
 a.  a sliding part or member
 b.  the track, guide, or channel on or in which such a part slides
16.  music
 a.  the sliding curved tube of a trombone that is moved in or out to allow the production of different harmonic series and a wider range of notes
 b.  a portamento
17.  music
 a.  a metal or glass tube placed over a finger held against the frets of a guitar to produce a portamento
 b.  See also bottleneck the style of guitar playing using a slide
18.  geology
 a.  the rapid downward movement of a large mass of earth, rocks, etc, caused by erosion, faulting, etc
 b.  See also landslide the mass of material involved in this descent
[Old English slīdan; related to slidor slippery, sliderian to slither, Middle High German slīten]

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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Word Origin & History

O.E. slidan "move smoothly, glide," from P.Gmc. *slidanan (cf. O.H.G. slito, Ger. Schlitten "sledge"), from PIE base *(s)lei- "slide" (cf. Lith. slystu "to glide, slide," O.C.S. sledu "track," Gk. olisthos "slipperiness," olisthanein "to slip," M.Ir. sloet "slide"). Phrase to let (something) slide is
recorded from c.1386. The noun is 1570, from the verb. Meaning "picture prepared for use with a projector" is attested from 1819 (in magic lantern shows). Slider as a type of baseball pitch is recorded from 1936. Slide-rule as a calculating tool is from 1838.
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary

slide (slīd)
A small glass plate for mounting specimens to be examined under a microscope.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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American Heritage
Science Dictionary
slide   (slīd)  Pronunciation Key 
  1. A mass movement of earth, rocks, snow, or ice down a slope. Slides can be caused by an accumulation of new matter or of moisture in the overlying material, or by erosion within or below the material. They are often triggered by an earthquake or other disturbance such as an explosion.

  2. The mass of material resulting from such a process.

The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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