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The important living portion of protoplasm, considered a chemical substance of the highest elaboration. Germ plasm and idioplasm are forms of plasmogen.

h gold, silver, or other metals, either by a mechanical process, as hammering, or by a chemical process, as electrotyping.

ctile and malleable, but very infusible, and characterized by its resistance to strong chemical reagents. It is used for crucibles, for stills for sulphuric acid, rarely for coin, and in the form of foil and wire for many purposes. Specific gravity 21.5. Atomic weight 194.3. Symbol Pt. Formerly called platina. Platinum…

possessed by some substances of crystallizing in closely similar forms while unlike in chemical composition.

perforated shelf, and used, when filled with water or mercury, for collecting gases in chemical operations. -- Pneumatic tube. See Pneumatic dispatch, above.

Expressed in metrical form; exhibiting the imaginative or the rhythmical quality of poetry; as, a poetical composition; poetical prose. Poetic license. See License, n., 4.

Imaginative language or composition, whether expressed rhythmically or in prose. Specifically: Metrical composition; verse; rhyme; poems collectively; as, heroic poetry; dramatic poetry; lyric or Pindaric poetry. "The planetlike music of poetry." Sir P. Sidney. She taketh most delight In music, instruments, and poetry.…

. See Poison sumac. Called also poison oak, and mercury. -- Poison nut. (Bot.) (a) Nux vomica. (b) The tree which yields this seed (Strychnos Nuxvomica). It is found on the Malabar and Coromandel coasts. -- Poison oak (Bot.), the poison ivy; also, the more shrubby Rhus diversiloba of California and Oregon. Poison sac…

aving a common radiating point; as, polar coördinates. Polar axis, that axis of an astronomical instrument, as an equatorial, which is parallel to the earths axis. -- Polar bear (Zoöl.), a large bear (Ursus, or Thalarctos, maritimus) inhabiting the arctic regions. It sometimes measures nearly nine feet in length and w…

active substance discovered by M. and MMe. Curie in pitchblende. It is closely related chemically to bismuth. It emits only alpha rays and is perhaps identical with radium F.

each other by polymerism; specifically, a substance produced from another substance by chemical polymerization. [Formerly also written polymere.]

A copy of a print, writing, etc., made by placing it upon a chemically prepared paper which is acted upon by a gas which permeates the paper of the print, writing, etc.

A scholar at Merton College, Oxford, who has a certain academical allowance or portion; -- corrupted into postmaster. Shipley.

. See under Range. -- Position micrometer, a micrometer applied to the tube of an astronomical telescope for measuring angles of position in the field of view. -- Single position (Arith.), the method of solving problems, in which the result obtained by operating with an assumed number is to the true result as the num…

y: Muscular force; the weight and motion of fluids, as water and air; heat obtained by chemical combination, and applied to produce changes in the volume and pressure of steam, air, or other fluids; and electricity, obtained by chemical action, and applied to produce alternation of magnetic force. (b) An engine, or mac…

t out by the direct actinic action of light without subsequent development by means of chemicals.

se or procedure; regular proceeding; as, the process of vegetation or decomposition; a chemical process; processes of nature. Tell her the process of Antonio's end. Shak.

without necessity; recklessly or viciously profuse; lavish; wasteful; not frugal or economical; as, a prodigal man; the prodigal son; prodigal giving; prodigal expenses. In fighting fields [patriots] were prodigal of blood. Dryden.

Chemical properties, or those which are conditioned by affinity and composition; thus, combustion, explosion, and certain solutions are reactions occasioned by chemical properties. Chemical properties are identical when there is identity of composition and structure, and change according as the composition changes. 3.…

One who makes dissections for anatomical illustration; usually, the assistant of a professional anatomist.