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The act of penetrating between or within other substances; mutual penetration. Milman.

Penetrating among or between other substances; penetrating each the other; mutually penetrative.

Entering; penetrating.

The penetrating of one rock, while in a plastic or metal state, into the cavities of another.

Gently penetrating or pervading. [Obs.] J. Philips.

Acute of mind; sharp; penetrating; having or expressing mental acuteness; as, a man of keen understanding; a keen look; keen features. To make our wits more keen. Shak. Before the keen inquiry of her thought. Cowper.

le. See Firefly. -- Lightning conductor, a lightning rod. -- Lightning glance, a quick, penetrating glance of a brilliant eye. -- Lightning rod, a metallic rod set up on a building, or on the mast of a vessel, and connected with the earth or water below, for the purpose of protecting the building or vessel from ligh…

ate, the zygote thus produced divides, forming spores, and eventually sporozoites, which, penetrating to the salivary glands of the mosquito, may be introduced into a new host. The attacks of the disease coincide with the dissolution of the corpuscles and liberation of the spores and products of growth of the parasites…

of the higher wind instruments in the modern orchestra, yet of great antiquity, having a penetrating pastoral quality of tone, somewhat like the clarinet in form, but more slender, and sounded by means of a double reed; a hautboy. Oboe d'amore Etym: [It., lit., oboe of love], and Oboe di caccia Etym: [It., lit., oboe…

The quality or state of being penetrant; power of entering or piercing; penetrating power of quality; as, the penetrancy of subtile effluvia.

Having power to enter or pierce; penetrating; sharp; subtile; as, penetrant cold. "Penetrant and powerful arguments." Boyle.

The act or process of penetrating, piercing, or entering; also, the act of mentally penetrating into, or comprehending, anything difficult. And to each in ward part, With gentle penetration, though unseen, Shoots invisible virtue even to the deep. Milton. A penetration into the difficulties of algebra. Watts.…

Tending to penetrate; of a penetrating quality; piercing; as, the penetrative sun. His look became keen and penetrative. Hawthorne.

Capable of penetrating or pervading. [Obs.] Prior.

Forcibly entering, or adapted to enter, at or by a point; perforating; penetrating; keen; -- used also figuratively; as, a piercing instrument, or thrust. "Piercing eloquence." Shak. -- Pier"cing*ly, adv. -- Pier"cing*ness, n.

Among the Jews, penetrating investigation, disputation, and drawing of conclusions, esp. in Talmudic study. -- Pil"pul*ist (#), n. --Pil`pul*is"tic (#), a.

Sharply painful; penetrating; poignant; severe; caustic; stinging. With pungent pains on every side. Swift. His pungent pen played its part in rousing the nation. J. R. Green.

Exploring thoroughly; scrutinizing; penetrating; trying; as, a searching discourse; a searching eye. "Piercing, searching, biting, cold." Dickens. -- Search"ing*ly, adv. -- Search"ing*ness, n.

Not intellectually deep; not profound; not penetrating deeply; simple; not wise or knowing; ignorant; superficial; as, a shallow mind; shallow learning. The king was neither so shallow, nor so ill advertised, as not to perceive the intention of the French king. Bacon. Deep versed in books, and shallow in himself. Milto…

Affecting the sense as if pointed or cutting, keen, penetrating, acute: to the taste or smell, pungent, acid, sour, as ammonia has a sharp taste and odor; to the hearing, piercing, shrill, as a sharp sound or voice; to the eye, instantaneously brilliant, dazzling, as a sharp flash.