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Theory :: Theory (n.) An exposition of the general or abstract principles of any science; as, the theory of music..

Naturist :: Naturist (n.) One who believes in, or conforms to, the theory of naturism..

Dualism :: Dualism (n.) The theory that each cerebral hemisphere acts independently of the other.

Polygeny :: Polygeny (n.) The theory that living organisms originate in cells or embryos of different kinds, instead of coming from a single cell; -- opposed to monogenesis..

Lamarckism :: Lamarckism (n.) The theory that structural variations, characteristic of species and genera, are produced in animals and plants by the direct influence of physical environments, and esp., in the case of animals, by effort, or by use or disuse of certain organs..

Humorism :: Humorism (n.) The theory founded on the influence which the humors were supposed to have in the production of disease; Galenism.

Pantagruelism :: Pantagruelism (n.) The theory or practice of the medical profession; -- used in burlesque or ridicule.

Darwinism :: Darwinism (n.) The theory or doctrines put forth by Darwin. See above.

Preformation :: Preformation (n.) An old theory of the preexistence of germs. Cf. Embo/tement.

Republicanism :: Republicanism (n.) A republican form or system of government; the principles or theory of republican government.

Underlie :: Underlie (v. t.) To be at the basis of; to form the foundation of; to support; as, a doctrine underlying a theory..

Theory :: Theory (n.) The science, as distinguished from the art; as, the theory and practice of medicine..

Plutonist :: Plutonist (n.) One who adopts the geological theory of igneous fusion; a Plutonian. See Plutonism.

Perigenesis :: Perigenesis (n.) A theory which explains inheritance by the transmission of the type of growth force possessed by one generation to another.

Ideology :: Ideology (n.) A theory of the origin of ideas which derives them exclusively from sensation.

Transmutation :: Transmutation (n.) The change of one species into another, which is assumed to take place in any development theory of life; transformism..

Immaterialism :: Immaterialism (n.) The doctrine that external bodies may be reduced to mind and ideas in a mind; any doctrine opposed to materialism or phenomenalism, esp. a system that maintains the immateriality of the soul; idealism; esp., Bishop Berkeley's theory of idealism..

Microbian :: Microbian (a.) Of, pertaining to, or caused by, microbes; as, the microbian theory; a microbian disease..

Epigenesis :: Epigenesis (n.) The theory of generation which holds that the germ is created entirely new, not merely expanded, by the procreative power of the parents. It is opposed to the theory of evolution, also to syngenesis..

Animalculist :: Animalculist (n.) A believer in the theory of animalculism.

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