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One of a group of gastropod mollusks, with a shell composed of eight movable dorsal plates. See Polyplacophora.

To treat or prepare with a chloride, as a plate with chloride of silver, for the purposes of photography. R. Hunt.

An adjustable catch, bent plate, or hook, for holding together two objects or the parts of anything, as the ends of a belt, the covers of a book, etc.

leanly joys." Glanvill. Some plain but cleanly country maid. Dryden. Displays her cleanly platter on the board. Goldsmith.

A stereotype plate or any similar reproduction of ornament, or lettering, in relief. Cliché casting, a mode of obtaining an impression from a die or woodcut, or the like, by striking it suddenly upon metal which has been fused and is just becoming solid; also, the casting so obtained.

easuring time, indicating the hour and other divisions by means of hands moving on a dial plate. Its works are moved by a weight or a spring, and it is often so constructed as to tell the hour by the stroke of a hammer on a bell. It is not adapted, like the watch, to be carried on the person.

An iron plate on an axletree or other wood to keep it from wearing; a washer.

Furnished with a shield, or a protective plate or shell.

The frontal plate of the head of an insect.

An extinct genus of Devonian ganoid fishes, having the broad plates about the head studded with berrylike tubercles.

The act of thinking; thought; meditation; contemplation. "Fixed in cogitation deep." Milton.

Given to thought or contemplation. Sir H. Wotton.

ess (Photog.), a process in which a film of sensitized collodion is used in preparing the plate for taking a picture. -- Styptic collodion, collodion containing an astringent, as tannin.

treatment causes swelling in those parts of the film which have been acted on by light, a plate results from which impressions can be taken with prepared ink. The albertype, phototype, and heliotype are collotypes.

attention. Among the objects of knowlwdge, two especially commend themselves to our contemplation. Sir M. Hale. I commend unto you Phebe our sister. Rom. xvi. 1.

An idea or expression wanting originality or interest; a trite or customary remark; a platitude.

A scheme of equalizing the social conditions of life; specifically, a scheme which contemplates the abolition of inequalities in the possession of property, as by distributing all wealth equally to all, or by holding all wealth in common for the equal use and advantage of all.

An iron plate or magnet placed near the compass on iron vessels to neutralize the effect of the ship's attraction on the needle.

An apparatus for confining or flattening between glass plates an object to be examined with the microscope; -- called also compressorium.

onductivity (Physics), the quantity of heat that passes in unit time through unit area of plate whose thickness is unity, when its opposite faces differ in temperature by one degree. J. D. Everett. -- Thermometic conductivity (Physics), the thermal conductivity when the unit of heat employed is the heat required to ra…