PREFORMATION
\pɹɪfɔːmˈe͡ɪʃən], \pɹɪfɔːmˈeɪʃən], \p_ɹ_ɪ_f_ɔː_m_ˈeɪ_ʃ_ə_n]\
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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
By Princeton University
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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
By DataStellar Co., Ltd
By Oddity Software
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An ancient theory of generation, which maintained that the germ of every part exists, but not visibly, before fecundation, and that fecundation occasions their development. It was the doctrine of pre-existence of germs.
By Robley Dunglison
Word of the day
Quinones
- Hydrocarbon rings which contain two moieties position. They can be substituted in any position except at the ketone groups.