perigenesisn.
/ˌpɛrɪˈdʒɛnᵻsɪs/, U.S. /ˌpɛrəˈdʒɛnəsəs/ Biology. Now historical.
Haeckel's term for: a former theory of reproduction in which it was supposed to be caused by regular vibrations of plastidules.
ΚΠ
1879 E. D. Cope Origin Fittest (1887) i. vi. 229 The Dynamic Theory of reproduction I proposed in 1871, and it has been since adopted by Haeckel under the name of perigenesis.
1886 Science 6 Aug. 128/1 Haeckel's perigenesis is..the substitution of rhythmical vibrations for the different kinds of gemmules.
1922 Science 3 Nov. 518/1 E. Haeckel described such a process of growth as the perigenesis of the plastidules though perigenesis as described by Haeckel is not referred to by Muller.
1973 Science 27 July 336/3 Subsequent chapters on..Haeckel's theory of perigenesis give unusual breadth to this chapter.
This entry has been updated (OED Third Edition, December 2005; most recently modified version published online March 2022).
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