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noun
the theory that all organisms start their existence already in a predetermined form upon conception and this form does not change in the course of their lifetime (as opposed to epigenesis)
Definition source: English Wiktionary via Wiktextract
Usage: uncountable
Topics: biology, natural-sciences
No example sentence was provided for this meaning.
Synonyms: none provided
Antonyms: none provided
History
From preformation + -ism.
Across languages
1 source translations are retained for this English entry.
