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ed 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.…

To recede and grow fainter; to become imperceptible; to vanish; -- often with out or away. Blemishes may die away and disappear amidst the brightness. Spectator.

Vanishing from notice; imperceptible. The difference between right and wrong, is some petty cases, is almost evanescent. Wollaston.

Imperceptible. [R.] South. -- Im`per*ceiv"a*ble*ness, n. Sharp.

The state or quality of being imperceptible.

Not to be discerned; imperceptible; not discoverable or visible. Secret and indiscernible ways. Jer. Taylor. -- In`dis*cern"i*ble*ness, n. -- In`dis*cern"i*bly, adv.

Incapable of being perceived by the senses; imperceptible. Hence: Progressing by imperceptible degrees; slow; gradual; as, insensible motion. Two small and almost insensible pricks were found upon Cleopatra's arm. Sir T. Browne. They fall away, And languish with insensible decay. Dryden.

Not tangible; incapable of being touched; not perceptible to the touch; impalpable; imperceptible. Bp. Wilkins. A corporation is an artificial, invisible, intangible being. Marshall. -- In*tan"gi*ble*ness, n. -- In*tan"gi*bly, adv.

A gliding, slipping, or gradual falling; an unobserved or imperceptible progress or passing away,; -- restricted usually to immaterial things, or to figurative uses. The lapse to indolence is soft and imperceptible. Rambler. Bacon was content to wait the lapse of long centuries for his expected revenue of fame. I. Tayl…

To render inert or imperceptible the peculiar affinities of, as a chemical substance; to destroy the effect of; as, to neutralize an acid with a base.

To wear out; to remove or destroy utterly by any means; to render imperceptible; as. to obliterate ideas; to obliterate the monuments of antiquity. The harsh and bitter feelings of this or that experience are slowly obliterated. W. Black.

marked by, artful and dexterous secrecy; subtle; as, a sly trick. Envy works in a sly and imperceptible manner. I. Watts.

uch; not rough; as, smooth glass; smooth porcelain. Chaucer. The outlines must be smooth, imperceptible to the touch, and even, without eminence or cavities. Dryden.

To get into one's power gradually and by imperceptible degrees; to take possession of by a gradual and imperceptible appropriation; -- with away. Variety of objects has a tendency to steal away the mind from its steady pursuit of any subject. I. Watts.

ulsation of the heart and the breathing, although still present, are almost or altogether imperceptible. He fell down in a trance. Chaucer.