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meter having wet and dry bulb thermometers, with an adjustable index showing directly the percentage of moisture in the air, etc.

A compound having a relatively large percentage of oxygen; a peroxide. [Obs.]

ception, or thought; the real object that is conceived or thought of. Whatsoever the mind perceives in itself, or as the immediate object of perception, thought, or undersanding, that I call idea. Locke.

The act or process of inferring from premises or reasons; perception of the connection between ideas; that which is inferred; inference; deduction; conclusion. Fraudulent deductions or inconsequent illations from a false conception of things. Sir T. Browne.

originated by some external object, but so modified as in any way to lead to an erroneous perception; as when the rolling of a wagon is mistaken for thunder.

or similitude of any person, thing, or act, sculptured, drawn, painted, or otherwise made perceptible to the sight; a visible presentation; a copy; a likeness; an effigy; a picture; a semblance. Even like a stony image, cold and numb. Shak. Whose is this image and superscription Matt. xxii. 20. This play is the image o…

power of the mind; the power to create or reproduce ideally an object of sense previously perceived; the power to call up mental imagines. Our simple apprehension of corporeal objects, if present, is sense; if absent, is imagination. Glanvill. Imagination is of three kinds: joined with belief of that which is to come;…

ween, or without the intervention of another object as a cause, means, or agency; acting, perceived, or produced, directly; as, an immediate cause. The immediate knowledge of the past is therefore impossible. Sir. W. Hamilton. Immediate amputation (Surg.), an amputation performed within the first few hours after an inj…

Not palpable; that cannot be felt; extremely fine, so that no grit can be perceived by touch. "Impalpable powder." Boyle.

Not perceiving, or not able to perceive. A. Baxter.

Not appreciable; too small to be perceived; incapable of being duly valued or estimated. Hallam.

Thus incorporeal spirits to smaller forms Reduced their shapes immense. Milton. Sense and perception must necessarily proceed from some incorporeal substance within us. Bentley.

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.

Not distinct or distinguishable; not separate in such a manner as to be perceptible by itself; as, the indistinct parts of a substance. "Indistinct as water is in water." Shak.

Not distinguishable; not capable of being perceived, known, or discriminated as separate and distinct; hence, not capable of being perceived or known; as, in the distance the flagship was indisguishable; the two copies were indisguishable in form or color; the difference between them was indisguishable.…

Destitute of the power of feeling or perceiving; wanting bodily sensibility. Milton.

In a manner not to be felt or perceived; imperceptibly; gradually. The hills rise insensibly. Addison.

Not sentient; not having perception, or the power of perception. The . . . attributes of an insentient, inert substance. Reid. But there can be nothing like to this sensation in the rose, because it is insentient. Sir W. Hamilton.

Power of acute observation and deduction; penetration; discernment; perception. Quickest insight In all things that to greatest actions lead. Milton.

To creep, wind, or flow in; to enter gently, slowly, or imperceptibly, as into crevices.