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The act or state of knowing; clear perception of fact, truth, or duty; certain apprehension; familiar cognizance; cognition. Knowledge, which is the highest degree of the speculative faculties, consists in the perception of the truth of affirmative or negative propositions. Locke.

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…

An instrument, devised by Professor Helmholtz, for testing the color perception of the eye, or for comparing different lights, as to their constituent color or their relative whiteness.

The power of perception by vision. My strength faileth me; as for the light of my eyes, it also is gone from me. Ps. xxxviii. 10.

Appearance; show; sign; expression. [Obs.] What of his heart perceive you in his face By any likelihood he showed to-day Shak.

The perceptive faculty concerned with the ability to remember the relative positions of places.

e bearing of surrounding objects; as, to lose one's self in a great city. (b) To have the perceptive and rational power temporarily suspended; as, we lose ourselves in sleep. -- To lose sight of. (a) To cease to see; as, to lose sight of the land. (b) To overlook; to forget; to fail to perceive; as, he lost sight of t…

Not perceptible to the senses; no longer visible; as, an island lost in a fog; a person lost in a crowd.

ard having on it the set of numbers drawn from the wheel takes the stakes after a certain percentage of them has been deducted for the dealer. A variety of lotto is called keno. [Often written loto.]

Cast steel containing a considerable percentage of manganese, which makes it very hard and tough. See Alloy steel, above.

Evident to the senses, esp. to the sight; apparent; distinctly perceived; hence, obvious to the understanding; apparent to the mind; easily apprehensible; plain; not obscure or hidden. Neither is there any creature that is not manifest in his sight. Heb. iv. 13. That which may be known of God is manifest in them. Rom.…

To invest wich material characteristics; to make perceptible to the senses; hence, to present to the mind through the medium of material objects. Having wich wonderful art and beauty materialized, if I may so call it, a scheme of abstracted notions, and clothed the most nice, refined conceptions of philosophy in sensib…

and all existent bodies are composed; anything which has extension, occupies space, or is perceptible by the senses; body; substance.

into the presence of without contact; to come close to; to intercept; to come within the perception, influence, or recognition of; as, to meet a train at a junction; to meet carriages or persons in the street; to meet friends at a party; sweet sounds met the ear. His daughter came out to meet him. Judg. xi. 34.…

A feeble earth tremor not directly perceptible, but detected only by means of specially constructed apparatus. -- Mi`cro*seis"mic (#), *seis"mic*al (#), a.

which thinks, remembers, reasons, wills. Reid. What we mean by mind is simply that which perceives, thinks, feels, wills, and desires. Sir W. Hamilton. Let every man be fully persuaded in his own mind. Rom. xiv. 5. The mind shall banquet, though the body pine. Shak.

To substitute in thought or perception; as, to mistake one person for another. A man may mistake the love of virtue for the practice of it. Johnson.

ting, and an extended sensory and motor training (with special emphasis on vision, touch, perception of movement, and their interconnections), mediated by a patented, standardized system of "didactic apparatus," which is declared to be "auto-regulative." Most of the chief features of the method are borrowed from curren…

morality. [Obs.] -- Moral sense, the power of moral judgment and feeling; the capacity to perceive what is right or wrong in moral conduct, and to approve or disapprove, independently of education or the knowledge of any positive rule or law. -- Moral theology, theology applied to morals; practical theology; casuistry…

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.