Phys′i‐og″e‐ny (?), n. [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.
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Webster's Dictionary 1913
Webster's Revised Unabridged Dictionary, C. & G. Merriam Co., 1913.