Physiogeny \Phys`i*og"e*ny\ (f[i^]z`[i^]*[o^]j"[-e]*n[y^]), n.
[Gr. fy`sis nature + root of gi`gnesqai 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.
[1913 Webster]