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5 definitions found
 for buffer
From The Collaborative International Dictionary of English v.0.48 :

  Buffer \Buff"er\ (b[u^]f"[~e]r), n. [Prop a striker. See
     Buffet a blow.]
     1. (Mech.)
        (a) An elastic apparatus or fender, for deadening the jar
            caused by the collision of bodies; as, a buffer at the
            end of a railroad car.
        (b) A pad or cushion forming the end of a fender, which
            receives the blow; -- sometimes called buffing
            [1913 Webster]
     2. One who polishes with a buff.
        [1913 Webster]
     3. A wheel for buffing; a buff.
        [1913 Webster]
     4. A good-humored, slow-witted fellow; -- usually said of an
        elderly man. [Colloq.] --Dickens.
        [1913 Webster]
     5. (Chem.) a substance or mixture of substances which can
        absorb or neutralize a certain quantity of acid or base
        and thus keep the degree of acidity or alkalinity of a
        solution (as measured by pH) relatively stable. Sometimes
        the term is used in a medical context to mean antacid.
     6. (Computers) a data storage device or portion of memory
        used to temporarily store input or output data until the
        receiving device is ready to process it.
     7. any object or person that shields another object or person
        from harm, shock, or annoyance; as, the President's staff
        is his buffer from constant interruptions of his work.

From The Collaborative International Dictionary of English v.0.48 :

  buffer \buff"er\ (b[u^]f"[~e]r), v. t. (Chem.)
     to add a buffer[5] to (a solution), so as to reduce unwanted
     fluctuation of acidity.

From WordNet (r) 3.0 (2006) :

      n 1: (chemistry) an ionic compound that resists changes in its
      2: a neutral zone between two rival powers that is created in
         order to diminish the danger of conflict [syn: buffer zone,
      3: an inclined metal frame at the front of a locomotive to clear
         the track [syn: fender, buffer, cowcatcher, pilot]
      4: (computer science) a part of RAM used for temporary storage
         of data that is waiting to be sent to a device; used to
         compensate for differences in the rate of flow of data
         between components of a computer system [syn: buffer,
         buffer storage, buffer store]
      5: a power tool used to buff surfaces [syn: buffer,
      6: a cushion-like device that reduces shock due to an impact
         [syn: buffer, fender]
      7: an implement consisting of soft material mounted on a block;
         used for polishing (as in manicuring) [syn: buff, buffer]
      v 1: add a buffer (a solution); "buffered saline solution for
           the eyes"
      2: protect from impact; "cushion the blow" [syn: cushion,
         buffer, soften]

From Moby Thesaurus II by Grady Ward, 1.0 :

  247 Moby Thesaurus words for "buffer":
     T square, aegis, annul, antacid, antidote, arch dam, arm guard,
     awl, backstop, bale breaker, bamboo curtain, bank, bar, barrage,
     barrier, battering ram, bear-trap dam, beaver dam, bevel,
     bevel square, bodkin, boom, bradawl, brattice, breakwater,
     breastwork, brick wall, bring to nothing, buff, buffer state,
     bulkhead, bulwark, bumper, calender, calipers, cancel, cancel out,
     cant hook, caulking iron, center punch, chamois, cloison,
     cofferdam, collision mat, come to nothing, contraceptive,
     copyright, counteractant, counteractive, counteragent,
     counterbalance, counterirritant, crash helmet, crowbar, cushion,
     dam, dashboard, defense, diaphragm, dibble, dike, dissepiment,
     ditch, dividers, dividing line, dividing wall, division, dodger,
     drag, earthwork, edger, electric sander, electric soldering iron,
     embankment, face mask, fence, fender, file, finger guard, flail,
     foot guard, forceps, fork, frustrate, fuse, gate, glazer, goggles,
     goose, governor, grader, grapnel, grappling iron, gravity dam,
     grease gun, grindstone, groin, guard, guardrail, hand guard,
     handrail, hard hat, harrow, hawk, helmet, hook, hydraulic-fill dam,
     insulation, interlock, interseptum, invalidate, iron, iron curtain,
     jack, jackscrew, jam, jetty, jointer, knee guard, knuckle guard,
     laminated glass, lathe, leaping weir, levee, level, life preserver,
     lifeline, lightning conductor, lightning rod, logjam, mangle, mask,
     mat, midriff, midsection, milldam, miter box, moat, mole, mound,
     mudguard, nail file, nail puller, negate, negativate, negative,
     neutralize, neutralizer, nose guard, nullifier, nullify, offset,
     pad, padding, palette knife, palladium, panel, parapet, paries,
     partition, party wall, patent, peavey, pilot, pincers, pinch bar,
     pitchfork, plane, planer, pliers, polisher, portcullis, press,
     preventative, preventive, property line, prophylactic,
     protective clothing, protective umbrella, puller, punch,
     punch pliers, puncheon, putty knife, ram, rammer, rampart, ramrod,
     remedy, ripping bar, roadblock, rock-fill dam, roller, rolling pin,
     safeguard, safety, safety glass, safety plug, safety rail,
     safety shoes, safety switch, safety valve, sander, screen,
     screwdriver, seat belt, seawall, separation, septulum, septum,
     shaper, shield, shin guard, shock pad, shutter dam, soldering iron,
     spatula, square, stapler, steamroller, stone wall, stultify,
     sun helmet, tackle, tamp, tamper, tamping pick, tap, thwart,
     tire iron, tire tool, tongs, trowel, tweezers, umbrella, undo,
     vise, vitiate, void, wall, weir, wicket dam, windscreen,
     windshield, work, wrecking bar, wringer

From The Free On-line Dictionary of Computing (30 December 2018) :

     1. An area of memory used for storing messages.  Typically, a
     buffer will have other attributes such as an input pointer
     (where new data will be written into the buffer), and output
     pointer (where the next item will be read from) and/or a count
     of the space used or free.  Buffers are used to decouple
     processes so that the reader and writer may operate at
     different speeds or on different sized blocks of data.
     There are many different algorithms for using buffers, e.g.
     first-in first-out (FIFO or shelf), last-in first-out (LIFO or
     stack), double buffering (allowing one buffer to be read while
     the other is being written), cyclic buffer (reading or writing
     past the end wraps around to the beginning).
     2. An electronic device to provide compatibility between two
     signals, e.g. changing voltage levels or current capability.

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