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tic of certain crystals which from twinning, or other causes, come to resemble forms of a system other than that to which they belong, as the apparently hexagonal prisms of aragonite.

The science of the human soul; specifically, the systematic or scientific knowledge of the powers and functions of the human soul, so far as they are known by consciousness; a treatise on the human soul. Psychology, the science conversant about the phenomena of the mind, or conscious subject, or self. Sir W. Hamilton.…

Of or pertaining to Ptolemy, the geographer and astronomer. Ptolemaic system (Astron.), the system maintained by Ptolemy, who supposed the earth to be fixed in the center of the universe, with the sun and stars revolving around it. This theory was received for ages, until superseded by the Copernican system.…

One who accepts the astronomical system of Ptolemy.

started by the ventricular systole, radiating from the semilunar valves over the arterial system, and gradually disappearing in the smaller branches. the pulse wave travels over the arterial system at the rate of about 29.5 feet in a second. H. N. Martin. -- To feel one's pulse. (a) To ascertain, by the sense of feelin…

f a pale brass-yellow color and brilliant metallic luster, crystallizing in the isometric system; iron pyrites; iron disulphide. Hence sable coal his massy couch extends, And stars of gold the sparkling pyrite blends. E. Darwin.

le is equal to the sum of the squares described upon the other two sides. -- Pythagorean system (Astron.), the commonly received system of astronomy, first taught by Pythagoras, and afterward revived by Copernicus, whence it is also called the Copernican system. -- Pythagorean letter. See Y.

Fourfold; folded or doubled twice. Quadruplex system (Electric Telegraph), a system by which four messages, two in each direction, may be sent simultaneously over the wire.

o which the rocks of the Canadian period have been divided in the American Lower Silurian system. See the Chart of Geology.

The system of the Quietists, who maintained that religion consists in the withdrawal of the mind from worldly interests and anxieties and its constant employment in the passive contemplation of God and his attributes.

Consisting of five; arranged by fives. Boyle. Quinary system (Zoöl.), a fanciful classification based on the hypothesis that each group contains five types.

In a radical manner; at, or from, the origin or root; fundamentally; as, a scheme or system radically wrong or defective.

raight line turns, and to which it serves to refer the successive points of a curve, in a system of polar coördinates. See Coördinate, n.

A number or quantity which is arbitrarily made the fundamental number of any system; a base. Thus, 10 is the radix, or base, of the common system of logarithms, and also of the decimal system of numeration.

opulation by Friedrich Wilhelm Raiffeisen (1818-88); as, Raiffeisen banks, the Raiffeisen system, etc. The banks are unlimited-liability institutions making small loans at a low rate of interest, for a designated purpose, to worthy members only.

Arranged systematically, or according to classes or subjects; as, a catalogue raisonné. See under Catalogue.

To dispose in a classified or in systematic order; to arrange regularly; as, to range plants and animals in genera and species.

To commit rape upon; to ravish. raped first by their assailant, and then by the Justice system. Corresponds to 2nd rape, n. 5. To rape and ren. See under Rap, v. t., to snatch.

The doctrine or system of those who deduce their religious opinions from reason or the understanding, as distinct from, or opposed to, revelation.

One who accepts rationalism as a theory or system; also, disparagingly, a false reasoner. See Citation under Reasonist.