The*or"ic*al*ly, adv. In a theoretic manner. [Obs.]

The"o*rist (?), n. [Cf. F. théoriste.] One who forms theories; one

given to theory and speculation; a speculatist. Cowper.

The greatest theoretists have given the preference to such a government

as that which obtains in this kingdom.

Addison.

The`o*ri*za"tion (?), n. The act or product of theorizing; the

formation of a theory or theories; speculation.

The"o*rize (?), v. i. [imp. & p. p. Theorized (?); p. pr. & vb. n.

Theorizing (?).] [Cf. F. théoriser.] To form a theory or theories; to

form opinions solely by theory; to speculate.

The"o*ri`zer (?), n. One who theorizes or speculates; a theorist.

The"o*ry (?), n.; pl. Theories (#). [F. théorie, L. theoria, Gr. &?; a

beholding, spectacle, contemplation, speculation, fr. &?; a spectator,

&?; to see, view. See Theater.] 1. A doctrine, or scheme of things,

which terminates in speculation or contemplation, without a view to

practice; hypothesis; speculation.

"This word is employed by English writers in a very loose and improper

sense. It is with them usually convertible into hypothesis, and

hypothesis is commonly used as another term for conjecture. The terms

theory and theoretical are properly used in opposition to the terms

practice and practical. In this sense, they were exclusively employed

by the ancients; and in this sense, they are almost exclusively

employed by the Continental philosophers." Sir W. Hamilton.

2. An exposition of the general or abstract principles of any science;

as, the theory of music.

3. The science, as distinguished from the art; as, the theory and

practice of medicine.

4. The philosophical explanation of phenomena, either physical or

moral; as, Lavoisier's theory of combustion; Adam Smith's theory of

moral sentiments.

Atomic theory, Binary theory, etc. See under Atomic, Binary, etc.

Syn. — Hypothesis, speculation. — Theory, Hypothesis. A theory is a

scheme of the relations subsisting between the parts of a systematic

whole; an hypothesis is a tentative conjecture respecting a cause of

phenomena.

{ The"o*soph (?), The*os"o*pher (?), } n. A theosophist.

{ The`o*soph"ic (?), The`o*soph"ic*al (?), } a. [Cf. F. théosophique.]

Of or pertaining to theosophy. — The`o*soph"ic*al*ly, adv.

The*os"o*phism (?), n. [Cf. F. théosophisme.] Belief in theosophy.

Murdock.

The*os"o*phist (?), n. One addicted to theosophy.

The theosophist is one who gives you a theory of God, or of the works

of God, which has not reason, but an inspiration of his own, for its

basis.

R. A. Vaughan.

The*os`o*phis"tic*al (?), a. Of or pertaining to theosophy;

theosophical.

The*os"o*phize (?), v. i. [imp. & p. p. Theosophized (?); p. pr. & vb.

n. Theosophizing.] To practice theosophy. [R.]

The*os"o*phy (?), n. [Gr. &?; knowledge of things divine, fr. &?; wise

in the things of God; &?; God + &?; wise: cf. F. théosophie.] Any

system of philosophy or mysticism which proposes to attain intercourse

with God and superior spirits, and consequent superhuman knowledge, by

physical processes, as by the theurgic operations of some ancient

Platonists, or by the chemical processes of the German fire

philosophers; also, a direct, as distinguished from a revealed,

knowledge of God, supposed to be attained by extraordinary

illumination; especially, a direct insight into the processes of the

divine mind, and the interior relations of the divine nature.

||Ther`a*peu"tæ (?), n. pl. [NL., fr. Gr. &?; (pl. &?;) an attendant,

||servant, physician. See Therapeutic.] (Eccl. Hist.) A name given to

||certain ascetics said to have anciently dwelt in the neighborhood of

||Alexandria. They are described in a work attributed to Philo, the

||genuineness and credibility of which are now much discredited.

||

{ Ther`a*peu"tic (?), Ther`a*peu"tic*al (?), } a. [F. thérapeutique,

Gr. &?;, from &?; attendant, servant, &?; to serve, take care of, treat

medically, &?; attendant, servant.] (Med.) Of or pertaining to the

healing art; concerned in discovering and applying remedies for

diseases; curative. "Therapeutic or curative physic." Sir T. Browne.

Medicine is justly distributed into "prophylactic," or the art of

preserving health, and therapeutic, or the art of restoring it.

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