Definition of theory

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Theory (n.) The philosophical explanation of phenomena, either physical or moral; as, Lavoisier's theory of combustion; Adam Smith's theory of moral sentiments..

Lern More About Theory

Catastrophist :: Catastrophist (n.) One who holds the theory or catastrophism.
Hypothesis :: Hypothesis (n.) A tentative theory or supposition provisionally adopted to explain certain facts, and to guide in the investigation of others; hence, frequently called a working hypothesis..
Communalism :: Communalism (n.) A French theory of government which holds that commune should be a kind of independent state, and the national government a confederation of such states, having only limited powers. It is advocated by advanced French republicans; but it should not be confounded with communism..
Kindergarten :: Kindergarten (n.) A school for young children, conducted on the theory that education should be begun by gratifying and cultivating the normal aptitude for exercise, play, observation, imitation, and construction; -- a name given by Friedrich Froebel, a German educator, who introduced this method of training, in rooms opening on a garden..
Epigenetic :: Epigenetic (a.) Of or pertaining to the epigenesis; produced according to the theory of epigenesis.
Encasement :: Encasement (n.) An old theory of generation similar to embo/tement. See Ovulist.
Methodist :: Methodist (n.) One of an ancient school of physicians who rejected observation and founded their practice on reasoning and theory.
Learned :: Learned (a.) Of or pertaining to learning; possessing, or characterized by, learning, esp. scholastic learning; erudite; well-informed; as, a learned scholar, writer, or lawyer; a learned book; a learned theory..
Integration :: Integration (n.) In the theory of evolution: The process by which the manifold is compacted into the relatively simple and permanent. It is supposed to alternate with differentiation as an agent in development.
Atomist :: Atomist (n.) One who holds to the atomic philosophy or theory.
Cosmos :: Cosmos (n.) The theory or description of the universe, as a system displaying order and harmony..
Monadology :: Monadology (n.) The doctrine or theory of monads.
Evolutionism :: Evolutionism (n.) The theory of, or belief in, evolution. See Evolution, 6 and 7..
Humorism :: Humorism (n.) The theory founded on the influence which the humors were supposed to have in the production of disease; Galenism.
Plutonism :: Plutonism (n.) The theory, early advanced in geology, that the successive rocks of the earth's crust were formed by igneous fusion; -- opposed to the Neptunian theory..
Cerebralism :: Cerebralism (n.) The doctrine or theory that psychical phenomena are functions or products of the brain only.
Ism :: Ism (n.) A doctrine or theory; especially, a wild or visionary theory..
Ovulist :: Ovulist (n.) A believer in the theory (called encasement theory), current during the last century, that the egg was the real animal germ, and that at the time of fecundation the spermatozoa simply gave the impetus which caused the unfolding of the egg, in which all generations were inclosed one within the other. Also called ovist..
Darwinian :: Darwinian (a.) Pertaining to Darwin; as, the Darwinian theory, a theory of the manner and cause of the supposed development of living things from certain original forms or elements..
Preformation :: Preformation (n.) An old theory of the preexistence of germs. Cf. Embo/tement.
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