資料來源 : pyDict

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資料來源 : Webster's Revised Unabridged Dictionary (1913)

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

         Almost imperceptible to the touch.       --Dryden.

         Its operation is slow, and in some cases almost
         imperceptible.                           --Burke.
   -- {Im`per*cep"ti*ble*ness}, n. -- {Im`per*cep"ti*bly}, adv.

         Their . . . subility and imperceptibleness. --Sir M.
                                                  Hale.