The Collaborative International Dictionary of English v.0.48:

Reiteration \Re*it`er*a"tion\ (-?"sh?n), n. [Cf. F.
   r['e]it['e]ration.]
   The act of reiterating; that which is reiterated.
   [1913 Webster]

WordNet (r) 3.0 (2006):

reiteration
    n 1: the act of repeating over and again (or an instance
         thereof) [syn: reduplication, reiteration]

Moby Thesaurus II by Grady Ward, 1.0:

102 Moby Thesaurus words for "reiteration":
   abundance, amplitude, banality, bromide, chestnut, cliche,
   cloud of words, commonplace, commonplace expression,
   conduplication, copiousness, copy, copying, corn, critique,
   diffuseness, diffusion, diffusiveness, doubling, duplicate,
   duplication, dwelling upon, effusion, effusiveness, elaboration,
   extravagance, exuberance, familiar tune, fecundity, fertility,
   fluency, formlessness, gemination, going over, gush, gushing,
   hackneyed saying, imitation, ingemination, iteration, lieu commun,
   locus communis, logorrhea, macrology, old joke, old saw, old song,
   old story, outpour, overflow, palilogy, platitude, pleonasm,
   practicing, prodigality, productivity, profuseness, profusion,
   prolificacy, prolificity, prosaicism, prosaism, prose, rampancy,
   rankness, reaffirmation, recap, recapitulation, recital, recountal,
   recounting, redundancy, reduplication, rehash, rehearsal, reissue,
   reiterativeness, repetition, repetition for effect, repetitiveness,
   replication, reprint, reproduction, restatement, resume, retelling,
   retold story, review, stereotyped saying, summary, summing up,
   superabundance, superfluity, superflux, talkativeness, tautology,
   teemingness, tirade, trite saying, triticism, twice-told tale,
   twinning