[1] : The Collaborative International Dictionary of English v.0.48

adaptation \ad`apta"tion\, n. cf. f. adaptation, ll.
   adaptatio.
   1. the act or process of adapting, or fitting; or the state
      of being adapted or fitted; fitness. "adaptation of the
      means to the end." --erskine.
      1913 webster

   2. the result of adapting; an adapted form.
      1913 webster

[2] : WordNet (r) 2.0

adaptation
     n 1: a written work as a novel that has been recast in a new
          form; "the play is an adaptation of a short novel" syn:
           version
     2: the process of adapting to something such as environmental
        conditions syn: adjustment
     3: physiology the responsive adjustment of a sense organ as
        the eye to varying conditions as of light
see also:
version adjustment 

[3] : Moby Thesaurus II by Grady Ward, 1.0

164 moby thesaurus words for "adaptation":
   nachtmusik, about-face, absolute music, accommodation, accord,
   accordance, acquiescence, adaption, adjusting, adjustment,
   agreement, air varie, aleatory, aleatory music, alignment,
   alteration, amelioration, apostasy, arrangement, assimilation,
   attunement, bearings, betterment, biological evolution, break,
   chamber music, chamber orchestra, change, change of heart,
   changeableness, coaptation, compliance, composition, conditioning,
   conformance, conformation other-direction, conformity, congruity,
   consistency, constructive change, continuity, conventionality,
   conversion, coordination, correspondence, defection, degeneration,
   degenerative change, descant, deterioration, deviation, difference,
   discontinuity, disorientation, divergence, diversification,
   diversion, diversity, electronic music, enablement, equipment,
   etude, exercise, fit, fitting, flexibility, flip-flop, furnishing,
   genesis, gradual change, harmonization, harmony, horotely,
   improvement, incidental music, instrumental music, instrumentation,
   integration, intonation, invention, keeping, line, malleability,
   melioration, mitigation, modification, modifying, modulation,
   natural selection, nocturne, obedience, observance, ontogenesis,
   ontogeny, opus, orchestration, orientation, orthodoxy, overthrow,
   phrasing, phylogenesis, phylogeny, physiogenesis, physiogeny,
   piece, pliancy, preparation, production, program music,
   qualification, radical change, re-creation, realignment,
   reconcilement, reconciliation, redesign, reform, reformation,
   regulation, remaking, renewal, reshaping, resolution,
   restructuring, reversal, revival, revivification, revolution,
   ricercar, score, setting, shift, solution, sonata, sonatina,
   squaring, strictness, string orchestra, string quartet, study,
   sudden change, suiting, suspension, switch, synchronization,
   tachytely, theme and variations, timing, tone painting,
   total change, traditionalism, transcription, transition, trio,
   tuning, turn, turnabout, uniformity, upheaval, variation, variety,
   violent change, work, worsening

Adaptation >> A Words
Adaptation, definition of term: Adaptation
adaptation_pag1.html