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

indiscernible \in`discern"ible\, a. pref. in- not +
   discernible: cf. f. indiscernable.
   not to be discerned; imperceptible; not discoverable or
   visible.
   1913 webster

         secret and indiscernible ways.           --jer. taylor.
   -- in`discern"ibleness, n. -- in`discern"ibly, adv.
   indiscerpibility
see also:
in`discern"ibleness in`discern"ibly 

[2] : WordNet (r) 2.0

indiscernible
     adj 1: difficult or impossible to perceive or discern; "an
            indiscernible increase in temperature" ant: discernible
     2: barely able to be perceived; "the transition was almost
        indiscernible"; "an almost insensible change" syn: insensible,
         undetectable
see also:
discernible insensible undetectable 

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

61 moby thesaurus words for "indiscernible":
   alike, atomic, behind the curtain, behind the scenes, camouflaged,
   concealed, corpuscular, disguised, embryonic, evanescent, germinal,
   granular, hidden, impalpable, imperceptible, imponderable,
   inappreciable, indistinct, indistinctive, indistinguishable,
   infinitesimal, insensible, intangible, interchangeable, invisible,
   latent, microcosmic, microscopic, molecular, out of sight, secret,
   sightless, standard, stereotyped, subatomic, submerged, tenuous,
   thin, ultramicroscopic, unapparent, unappreciable, unbeheld,
   unbeholdable, undifferentiated, undiscernible, undiscriminated,
   undistinguishable, undistinguished, uniform, unnoticed,
   unobservable, unobserved, unperceivable, unperceived, unrealized,
   unseeable, unseen, unviewed, unwitnessed, viewless,
   without distinction

Indiscernible >> I Words
Indiscernible, definition of term: Indiscernible
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