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Webster 1913 Edition
Imperceptible
Imˊper-cep′ti-ble
,Adj.
[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.
Almost
– imperceptible
to the touch. Dryden.
Imˊper-cep′ti-ble-ness
, Noun.
Imˊper-cep′ti-bly
, adv.
Their . . . subtilty and
imperceptibleness
. Sir M. Hale.
Webster 1828 Edition
Imperceptible
IMPERCEP'TIBLE
, a.1.
Not to be perceived; not to be known or discovered by the senses. We say a thing is imperceptible to the touch, to the eye or sight, to the ear, to the taste or smell. Hence,2.
Very small; fine; minute in dimensions; or very slow in motion or progress; as, the growth of a plant or animal is imperceptible; it is too slow to be perceived by the eye.IMPERCEP'TIBLE
,Noun.