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To pass or flow through, as an aperture, pore, or interstice; to permeate. That labyrinth is easily pervaded. Blackstone.

The act of pervading, passing, or spreading through the whole extent of a thing. Boyle.

Tending to pervade, or having power to spread throughout; of a pervading quality. "Civilization pervasive and general." M. Arnold.

Capable of being penetrated, or seen through, by physical or mental vision. [R.] God, whose secrets are pervious to no eye. Jer. Taylor.

al between the cavity of the mouth and the esophagus. It has one or two external openings through the nose in the higher vertebrates, and lateral branchial openings in fishes and some amphibias.

A luminous impression produced through excitation of the retina by some cause other than the impingement upon it of rays of light, as by pressure upon the eyeball when the lids are closed. Cf. After- image.

bjects on a screen in the colors of nature. The images of three partial photographs taken through color screens (red, green, and blue, respectively) are superimposed. Each image is given its own primary color, and these colors blend and reproduce the colors of the object.

kes, which when turning very rapidly is illuminated by momentary flashes of light passing through slits in a rotating disk. By properly timing the succession of flashes the wheel is made to appear to be motionless, or to rotate more or less slowly in either direction.

proportionately rapid growth of the upper surface of dorsiventral organs, such as leaves, through the stimulus of exposure to light. Encyc. Brit.

drogen of the water in the cell, produces formaldehyde, the latter forming various sugars through polymerization. Vines suggests that the carbohydrates are secretion products of the chloroplasts, derived from decomposition of previously formed proteids. The food substances are usually quickly translocated, those that a…

on of conidia or sporangia; but the group shows every form of transition from this method through simple conjugation to perfect sexual reproduction by egg and sperm in the higher forms. -- Phy`co*my*ce"tous (#), a.

Perceptible through a bodily or material organization; cognizable by the senses; external; as, the physical, opposed to chemical, characters of a mineral.

The piece in a loom which strikes the end of the shuttle, and impels it through the warp.

To penetrate; to enter; to force a way into or through; to pass into or through; as, to pierce the enemy's line; a shot pierced the ship.

pigeon house. (b) See Pigeonhole. (c) pl. An old English game, in which balls were rolled through little arches. Halliwell. -- Pigeon house, a dovecote. -- Pigeon pea (Bot.), the seed of Cajanus Indicus; a kind of pulse used for food in the East and West Indies; also, the plant itself. -- Pigeon plum (Bot.), the edi…

A frame of adjustable boards erected on a post, and having holes through which the head and hands of an offender were thrust so as to be exposed in front of it. Shak.

Figuratively: A guide; a director of another through a difficult or unknown course.

A clamp on a flexible pipe to regulate the flow of a fluid through the pipe.

A feather not fully developed; esp., a rudimentary feather just emerging through the skin.

The sound made by a bullet in striking a solid object or in passing through the air.