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preformation    
n. 预先形成

预先形成

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  • Preformationism - Wikipedia
    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 [1]
  • Preformationism in the Enlightenment | Embryo Project Encyclopedia
    Preformationism was a widely-held theory by Enlightenment-era scientists, but by the early 1800s, most scientists had abandoned it, in part because higher magnification in microscopes enabled them to see the very earliest stages of embryos as small collections of cells
  • Preformation theory | biology | Britannica
    …Bonnet and Spallanzani accepted the preformation theory According to their version of this theory, the germs of all living things were created by God in the beginning and were encapsulated within the first female of each species
  • PREFORMATION Definition Meaning - Merriam-Webster
    : the now discredited theory that every germ cell contains the organism of its kind fully formed and that development involves merely an increase in size compare epigenesis sense 1, homunculus sense 2 1732, in the meaning defined at sense 1 “Preformation ”
  • Epigenesis and Preformationism - Stanford Encyclopedia of Philosophy
    Epigenesis and preformation offer two competing interpretations of what is involved, with a range of alternatives in between The two approaches draw on different metaphysical and different epistemological sets of assumptions
  • Preformationism - an overview | ScienceDirect Topics
    Preformationism was recast as the more general doctrine of predeterminism, the idea that development consists of an orderly progression of qualitative change to a predetermined end point You might find these chapters and articles relevant to this topic
  • Preformation | definition of preformation by . . . - Medical Dictionary
    The act of shaping or forming in advance; prior formation 2 A theory popular in the 1700s that all parts of an organism exist completely formed in the germ cell and develop only by increasing in size The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company Published by Houghton Mifflin Company
  • Preformationism - Anthroholic
    Preformationism, also known as the theory of preformation, is a biological theory that originated in the 17th century and posits that all organisms develop from preexisting miniature versions of themselves, called "homunculi "
  • preformation - Wiktionary, the free dictionary
    preformation (countable and uncountable, plural preformations) Prior formation ( biology , historical ) The theory that organisms are fully developed in the form of an egg or seed , and just increase in size (as opposed to epigenesis )
  • PREFORMATION Definition Meaning | Dictionary. com
    Preformation definition: previous formation See examples of PREFORMATION used in a sentence





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