• Webster's Revised Unabridged Dictionary
    • n Syngenesis (Biol) A theory of generation in which each germ is supposed to contain the germs of all subsequent generations; -- the opposite of epigenesis.
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Century Dictionary and Cyclopedia
    • n syngenesis Reproduction in which a male and a female take part, one furnishing spermatozoa and the other an ovum, so that the substance of the embryo is actually derived from both parents. This is the rule, perhaps without exception, in sexual generation, and opposes the view of the spermists, that the embryo comes from the male element, for the development of which the female furnishes only the nidus, and that of the ovulists, that the embryo is derived entirely from the female, the male principle affording only the requisite stimulus to development. As a doctrine or theory, one form of syngenesis supposes every germ to contain the germs of all generations to come, and is opposed to epigenesis.
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Chambers's Twentieth Century Dictionary
    • n Syngenesis sin-jen′e-sis the theory of reproduction which makes the embryo the product of both male and female by the union of spermatozoon and ovum: the theory that the germ so formed contains the germs of all future generations—opp. to Epigenesis
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Webster's Revised Unabridged Dictionary
Pref. syn-, + genesis,
Chambers's Twentieth Century Dictionary
Gr. syn, with, genesis, generation.


In literature:

The soil is clayey, and thinly bestrewed with alpine grass, intermingled with syngenesious and cruciferous plants.
"Travels in Peru, on the Coast, in the Sierra, Across the Cordilleras and the Andes, into the Primeval Forests" by J. J. von Tschudi