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Webster 1913 Edition
Physiogeny
Physˊi-og′e-ny
(fĭzˊĭ-ŏj′ē̍-ny̆)
, Noun.
 [Gr. 
φύσισ 
nature + root of γίγνεσθαι 
to be born.] (Biol.) 
The germ history of the functions, or the history of the development of vital activities, in the individual, being one of the branches of ontogeny. See 
Morphogeny
. Haeckel.