Imperceptible

3 definitions found

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

  Imperceptible \Im`per*cep"ti*ble\, a. [Pref. im- not +
     perceptible: cf. F. imperceptible.]
     Not perceptible; not to be apprehended or cognized by the
     senses; not discernible by the mind; not easily apprehended.
     [1913 Webster]
  


           Almost imperceptible to the touch.       --Dryden.
     [1913 Webster]
  
           Its operation is slow, and in some cases almost
           imperceptible.                           --Burke.
     -- {Im`per*cep"ti*ble*ness}, n. -- {Im`per*cep"ti*bly}, adv.
     [1913 Webster]
  
           Their . . . subtilty and imperceptibleness. --Sir M.
                                                    Hale.
     [1913 Webster]

From WordNet (r) 2.0 [wn]:

  imperceptible
       adj : impossible or difficult to perceive by the mind or senses;
             "an imperceptible drop in temperature"; "an
             imperceptible nod"; "color is unperceivable to the
             touch" [syn: {unperceivable}] [ant: {perceptible}]

From Moby Thesaurus II by Grady Ward, 1.0 [moby-thes]:

  70 Moby Thesaurus words for "imperceptible":
     atomic, behind the curtain, behind the scenes, camouflaged,
     concealed, corpuscular, disguised, embryonic, ephemeral,
     evanescent, faint, fugitive, germinal, granular, hidden,
     ill-defined, impalpable, imponderable, inappreciable, inaudible,
     inconsiderable, inconspicuous, indiscernible, indistinct,
     indistinguishable, infinitesimal, insensible, insignificant,
     intangible, invisible, latent, microcosmic, microscopic, minuscule,
     minute, molecular, momentary, obscure, out of sight, secret,
     sightless, slight, subatomic, submerged, subtle, tenuous, thin,
     tiny, trivial, ultramicroscopic, unapparent, unappreciable,
     unbeheld, unbeholdable, unclear, undiscernible, undistinguishable,
     unnoticeable, unnoticed, unobservable, unobserved, unperceivable,
     unperceived, unrealized, unseeable, unseen, unviewed, unwitnessed,
     vague, viewless