The Collaborative International Dictionary of English v.0.48:

Mounting \Mount"ing\, n.
   1. The act of one that mounts.
      [1913 Webster]

   2. That by which anything is prepared for use, or set off to
      advantage; equipment; embellishment; setting; as, the
      mounting of a sword or diamond.
      [1913 Webster]

   3. (Aeronautics) same as Carriage.
      [Webster 1913 Suppl.]

The Collaborative International Dictionary of English v.0.48:

Mount \Mount\, v. i. [imp. & p. p. Mounted; p. pr. & vb. n.
   Mounting.] [OE. mounten, monten, F. monter, fr. L. mons,
   montis, mountain. See Mount, n. (above).]
   1. To rise on high; to go up; to be upraised or uplifted; to
      tower aloft; to ascend; -- often with up.
      [1913 Webster]

            Though Babylon should mount up to heaven. --Jer. li.
                                                  53.
      [1913 Webster]

            The fire of trees and houses mounts on high.
                                                  --Cowley.
      [1913 Webster]

   2. To get up on anything, as a platform or scaffold;
      especially, to seat one's self on a horse for riding.
      [1913 Webster]

   3. To attain in value; to amount.
      [1913 Webster]

            Bring then these blessings to a strict account,
            Make fair deductions, see to what they mount.
                                                  --Pope.
      [1913 Webster]

WordNet (r) 3.0 (2006):

mounting
    n 1: an event that involves rising to a higher point (as in
         altitude or temperature or intensity etc.) [syn: climb,
         climbing, mounting]
    2: framework used for support or display

Moby Thesaurus II by Grady Ward, 1.0:

239 Moby Thesaurus words for "mounting":
   Brownian movement, Olympian, access, accession, accretion, accrual,
   accruement, accumulation, addition, advance, aerial,
   aggrandizement, airy, altitudinous, amplification, anabasis,
   anabatic, angular motion, appreciation, ascendant, ascending,
   ascension, ascensional, ascensive, ascent, aspiring, augmentation,
   axial, axial motion, back, back-flowing, backflowing, backing,
   backward, backward motion, ballooning, bearing, bloating, boom,
   boost, broadening, buildup, bushing, career, chassis, clamber,
   climb, climbing, colossal, course, crescendo, current, descending,
   descent, development, direction, dominating, down-trending,
   downward, downward motion, dress rehearsal, drift, driftage,
   drifting, ebbing, edema, elevated, elevation, eminent, enlargement,
   escalade, ethereal, exalted, expansion, extension, flight, flood,
   flow, flowing, fluent, flux, flying, forward motion, fountain,
   frame, gain, going, greatening, growth, gush, gyrational, gyratory,
   gyring up, haughty, high, high-pitched, high-reaching, high-set,
   high-up, hike, in the ascendant, increase, increment, inflation,
   infrastructure, jet, jump, leap, leaping, levitation, lofty,
   mise-en-scene, monumental, mount, multiplication, oblique motion,
   ongoing, onrush, outtopping, overlooking, overtopping, passage,
   passing, plunging, production, productiveness, progress,
   progressive, proliferation, prominent, radial motion, raise,
   rampant, random motion, rearing, reflowing, refluence, refluent,
   reflux, regression, regressive, rehearsal, retrogression,
   retrogressive, rise, rising, rocketing up, rotary, rotational,
   rotatory, run, run-through, running, rush, rushing, saltation,
   saltatory, scandent, scansorial, set, setting, shooting up,
   sideward, sideward motion, sinking, skeleton, skyrocketing,
   snowballing, soaring, spiraling, spiring, spout, spread, spring,
   springing, spurt, stage management, staging, steep, sternway,
   stream, streaming, sublime, subsiding, superlative, supernal,
   surge, swelling, takeoff, taking off, topless, toplofty, topping,
   towering, towery, traject, trajet, trend, tumescence, underframe,
   up, up-trending, uparching, upclimb, upcoming, updraft, upgang,
   upgo, upgoing, upgrade, upgrowth, uphill, uphillward, upleap,
   uplift, uplifted, upping, upreared, uprisal, uprise, uprising,
   uprush, upshoot, upslope, upsloping, upsurge, upsurgence, upsweep,
   upswing, uptrend, upturn, upward, upward motion, upwith, vault,
   walk-through, waxing, widening, zooming