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preformation
[ pree-fawr-mey-shuhn ]
noun
- previous formation.
- Biology. (formerly) the theory that the individual, with all its parts, preexists in the germ cell and grows from microscopic to normal proportions during embryogenesis ( epigenesis ).
preformation
/ ˌːɔːˈɪʃə /
noun
- the act of forming in advance; previous formation
- biology the theory, now discredited, that an individual develops by simple enlargement of a fully differentiated egg cell Compare epigenesis
Other yvlog Forms
- Эǰ·tDz·· adjective
yvlog History and Origins
Origin of preformation1
Example Sentences
The peculiar charm of this idea—called preformation—was that it was infinitely recursive.
In France, the theory was called “embodiment”; in England, “preformation” or “preexistence.”
The opposing views of to-day were in existence centuries ago, and they are known in the history of science as the theory of preformation or evolution, and the theory of epigenesis.
We mistake our power of analyzing our inner world, for its preformation, i. e. the genealogist thinks himself both originator and founder.
Weismann is so far right, he admits, from his materialistic premisses when he starts with preformations.
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