What does preformation mean?

Definitions for preformation
ˌpri fɔrˈmeɪ ʃənpre·for·ma·tion

This dictionary definitions page includes all the possible meanings, example usage and translations of the word preformation.

Princeton's WordNet

  1. preformation, theory of preformationnoun

    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

Wiktionary

  1. preformationnoun

    Prior formation.

  2. preformationnoun

    The theory that organisms are fully developed in the form of an egg or seed, and just increase in size (as opposed to epigenesis.

ChatGPT

  1. preformation

    Preformation is a theory in embryology where it is presumed that the development of an organism is a process of increasing complexity, and that an organism's characteristics and traits are determined at conception because they are already present in either the egg or the sperm. This theory suggests that all organisms were created at the same time, and have since been passed on through successive generations, indicating that every embryo exists preformed in the germ cell of its parents, grandparents, and prior ancestors. Some changes to the preformed structures occur due to external environment's influence.

Webster Dictionary

  1. Preformationnoun

    an old theory of the preexistence of germs. Cf. Embo/tement

Entomology

  1. Preformation

    the doctrine of growth or development from already existing rudiments; opposed to epigenesis: q.v.

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Numerology

  1. Chaldean Numerology

    The numerical value of preformation in Chaldean Numerology is: 9

  2. Pythagorean Numerology

    The numerical value of preformation in Pythagorean Numerology is: 6

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"preformation." Definitions.net. STANDS4 LLC, 2024. Web. 16 Jun 2024. <https://www.definitions.net/definition/preformation>.

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