n. The genetic origin of an individual derived from material from both parents (by sexual reproduction)
n. descent from a common ancestor
the GNU version of the Collaborative International Dictionary of English
n. A theory of generation in which each germ is supposed to contain the germs of all subsequent generations; -- the opposite of epigenesis.
The Century Dictionary and Cyclopedia
n. 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.
Word Usage
"Growth, therefore, was, on this hypothesis, a process partly of simple evolution, and partly of what has been termed "syngenesis.""