The Collaborative International Dictionary of English v.0.48:

Rendition \Ren*di"tion\ (r?n-d?sh"?n), n. [LL. rendere to
   render: cf. L. redditio. See Render, and cf. Reddition.]
   [1913 Webster]
   1. The act of rendering; especially, the act of surrender, as
      of fugitives from justice, at the claim of a foreign
      government; also, surrender in war.
      [1913 Webster]

            The rest of these brave men that suffered in cold
            blood after articles of rendition.    --Evelyn.
      [1913 Webster]

   2. Translation; rendering; version.
      [1913 Webster]

            This rendition of the word seems also most naturally
            to agree with the genuine meaning of some other
            words in the same verse.              --South.
      [1913 Webster]

WordNet (r) 3.0 (2006):

rendition
    n 1: a performance of a musical composition or a dramatic role
         etc.; "they heard a live rendition of three pieces by
         Schubert" [syn: rendition, rendering]
    2: an explanation of something that is not immediately obvious;
       "the edict was subject to many interpretations"; "he annoyed
       us with his interpreting of parables"; "often imitations are
       extended to provide a more accurate rendition of the child's
       intended meaning" [syn: interpretation, interpreting,
       rendition, rendering]
    3: handing over prisoners to countries where torture is allowed
    4: the act of interpreting something as expressed in an artistic
       performance; "her rendition of Milton's verse was
       extraordinarily moving" [syn: rendition, rendering,
       interpretation]

Moby Thesaurus II by Grady Ward, 1.0:

131 Moby Thesaurus words for "rendition":
   alphabet, art, blueprint, cameo, cantando, catalog, cataloging,
   character, character sketch, charactering, characterization, chart,
   choreography, composite reading, concentration, concept,
   conception, conflation, construction, conventional representation,
   critical edition, dance notation, decoction, delineation,
   demilegato, demonstration, depiction, depictment, description,
   details, diagram, diplomatic text, distillation, drama, drawing,
   edited text, edition, evocation, execution, exemplification,
   expression, extradition, figuration, fingering, giving back,
   glissando, graphic account, hieroglyphic, iconography, ideogram,
   illustration, image, imagery, imaging, impression, infusion,
   interpretation, intonation, itemization, lection, legato, letter,
   limning, logogram, logograph, map, mezzo staccato, music-making,
   musical notation, normalized text, notation, parlando,
   particularization, performance, photograph, pianism, pictogram,
   picture, picturization, pizzicato, plan, portrait, portraiture,
   portrayal, prefigurement, presentment, pressing, printing, profile,
   projection, reading, realization, recommitment, reddition, remand,
   remandment, remitter, rendering, repatriation, repercussion,
   representation, restitution, restoration, restoring, return,
   rubato, schema, scholarly edition, score, script, sending back,
   sketch, slur, soaking, specification, spiccato, squeezing,
   staccato, steeping, syllabary, symbol, tablature, text, touch,
   understanding, variant, version, vignette, vivid description,
   word painting, writing