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preformation

   Also found in: Dictionary/thesaurus, Encyclopedia, Wikipedia 0.01 sec.
preformation
[-fôrmā′shən]
Etymology: L, prae + formatio, formation
an early theory in embryology in which the organism is contained in minute and complete form within the germ cell and after fertilization grows from microscopic to normal size. Compare epigenesis.


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Stone, Prebis, and others asserting that they mismanaged Thomas' medical condition and failed to diagnose abdominal abscesses, which resulted in preformation of his colon.
Before there was embryology, or genetics, or microbiology, there was preformation and epigenesis.
Given the assumption of preformation, the major dispute was whether the animalcules were lodged in the egg or the sperm.
 
 
 
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