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

coherent \coher"ent\, a. l. cohaerens, p. pr. see cohere.
   1. sticking together; cleaving; as the parts of bodies; solid
      or fluid. --arbuthnot.
      1913 webster

   2. composed of mutually dependent parts; making a logical
      whole; consistent; as, a coherent plan, argument, or
      discourse.
      1913 webster

   3. logically consistent; -- applied to persons; as, a
      coherent thinker. --watts.
      1913 webster

   4. suitable or suited; adapted; accordant. obs.
      1913 webster

            instruct my daughter how she shall persever,
            that time and place, with this deceit so lawful,
            may prove coherent.                   --shak.
      1913 webster

   5. physics, optics of or pertaining to electromagnetic
      waves that have a constant phase relationship with each
      other; having identical phase at all points; as, the
      coherent light produced by a laser.
      pjc
see also:
cohere 

[2] : WordNet (r) 2.0

coherent
     adj 1: marked by an orderly, logical, and aesthetically consistent
            relation of parts; "a coherent argument" ant: incoherent
     2: capable of thinking and expressing yourself in a clear and
        consistent manner; "a lucid thinker"; "she was more
        coherent than she had been just after the accident" syn:
        logical, lucid
     3: sticking together; "two coherent sheets"; "tenacious burrs"
        syn: tenacious
see also:
incoherent logical lucid tenacious 

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

116 moby thesaurus words for "coherent":
   accordant, adhering, affirmative, agglutinate, agreeable, agreeing,
   answerable, articulate, at one, clean-cut, clear, clear as crystal,
   clear as day, clear-cut, cleaving, clinging, coexistent,
   coexisting, cohering, cohesive, coincident, coinciding,
   commensurate, compatible, comprehensible, concordant, concurring,
   conformable, congenial, congruent, congruous, connected,
   consentaneous, consentient, consistent, consonant, cooperating,
   cooperative, correspondent, corresponding, crisp, crystal-clear,
   crystalline, defined, definite, direct, distinct, en rapport,
   equivalent, explicit, express, harmonious, holding together,
   impartible, in accord, in agreement, in rapport, in sync,
   in synchronization, inaccordance, indiscerptible, indissoluble,
   indissolvable, indivisible, infrangible, infusible, inharmony,
   inseparable, insoluble, intelligible, like-minded, limpid, logical,
   loud and clear, lucid, luminous, of a piece, of like mind,
   of one mind, on all fours, orderly, organized, pellucid,
   perspicuous, plain, positive, proportionate, rational, reasonable,
   reconcilable, self-consistent, sensible, simple, sticking,
   straightforward, stuck, symbiotic, synchronized, synchronous,
   translucent, transparent, transpicuous, unambiguous, unanimous,
   unconfused, understandable, undividable, unequivocal, unified,
   uniform, unisonant, unisonous, univocal, unmistakable,
   well-defined, well-ordered

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