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

consonance \con"sonance\, consonancy \con"sonancy\, n. l.
   consonantia: cf. f. consonnance.
   1. mus. accord or agreement of sounds produced
      simultaneously, as a note with its third, fifth, and
      eighth.
      1913 webster

   2. agreement or congruity; harmony; accord; consistency;
      suitableness.
      1913 webster

            the perfect consonancy of our persecuted church to
            the doctrines of scripture and antiquity. --hammond.
      1913 webster

            the optic nerve responds to the waves with which it
            is in consonance.                     --tyndall.
      1913 webster

   3. friendship; concord. obs.
      1913 webster

            by the consonancy of our youth.       --shak.

   syn: agreement; accord; consistency; unison; harmony;
        congruity; suitableness; agreeableness.
        1913 webster

[2] : WordNet (r) 2.0

consonance
     n 1: the repetition of consonants or consonant patterns
          especially at the ends of words syn: consonant rhyme
     2: the property of sounding harmonious syn: harmoniousness
see also:
consonant rhyme harmoniousness 

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

89 moby thesaurus words for "consonance":
   accord, accordance, affinity, agreement, alliteration, assent,
   assonance, attune, attunement, blank verse, calm, chime, chiming,
   chorus, clink, coherence, coincidence, compatibility, concentus,
   concert, concord, concordance, conformance, conformation,
   conformity, congeniality, congruence, congruency, congruity,
   consistency, consonancy, consort, constancy, continuity,
   cooperation, correspondence, crambo, diapason, double rhyme,
   equability, equanimity, equilibrium, equivalence, euphony,
   evenness, eye rhyme, harmonics, harmony, heavy harmony,
   homogeneity, homophony, intersection, monochord, monody,
   monolithism, near rhyme, oneness, overlap, parallelism, peace,
   persistence, rapport, rhyme, rhyme royal, rhyme scheme,
   rhyming dictionary, self-consistency, single rhyme, slant rhyme,
   stability, steadfastness, steadiness, symmetry, symphony, sync,
   synchronism, synchronization, tail rhyme, tally,
   three-part harmony, timing, tune, uniformity, union, unison,
   unisonance, unity, unrhymed poetry, unruffledness

Consonance >> C Words
Consonance, definition of term: Consonance
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