preformation
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preformation
n.
act of shaping in advance; prior creation, previous production; act of previously taking shape, act of being formed beforehand
Preformationism
In the
history of biology,
preformationism (or
preformism) is a formerly-popular theory that organisms develop from miniature versions of themselves. Instead of assembly from parts, preformationists believed that the
form of living things exist, in real terms, prior to their
development. It suggests that all
organisms were created at the same time, and that succeeding generations grow from
homunculi, or
animalcules, that have existed since the beginning of creation.
preformation
Noun
1. a theory (popular in the 18th century and now discredited) that an individual develops by simple enlargement of a tiny fully formed organism (a homunculus) that exists in the germ cell
(synonym) theory of preformation
(hypernym) theory
(derivation) preform
préformation
nf.
preformation, act of shaping in advance; prior creation, previous production; act of previously taking shape, act of being formed beforehand
Preformation
(n.)
An old theory of the preexistence of germs. Cf. Embo/tement.
Webster's Revised Unabridged Dictionary (1913), edited by Noah Porter.
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