2 definitions found
From Webster's Revised Unabridged Dictionary (1913) [web1913]:
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.
From WordNet r 1.6 [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}]
more about imperceptible
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