PREFORMATION

preformation, theory of preformation

(noun) 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

Source: WordNet® 3.1


Etymology

Noun

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).

Source: Wiktionary


Pre`for*ma"tion, n. (Biol.)

Definition: An old theory of the preëxistence of germs. Cf. Emboîtement.

Source: Webster’s Unabridged Dictionary 1913 Edition



RESET




Word of the Day

9 May 2025

RIGHT

(noun) anything in accord with principles of justice; “he feels he is in the right”; “the rightfulness of his claim”


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Coffee Trivia

Plain brewed coffee contains almost no calories, while coffee with dairy products, sugar, and other flavorings is much higher in calories. An espresso has 20 calories. A nonfat latte has 72, while a flavored one has 134.

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