Dictionary.net

1. The theory that the embryo is created by the parents jointly and is not developed from preexisting cells. 2. The Harveian theory that the embryo is built up gradually by the addition of one part after another in a definite sequence; opposed to the theory of evolution. 3. The growth and differentiation of a single ovum. 4. A new symptom, not antagonistic to those already present, developing in the course of a disease.

A new formation.

The doctrine that the germ of an organism does not, according to the theory of evolution, pre-exist in the parent, but is first created or brought into existence by the procreative powers of the parent.

The doctrine which holds that the germ is actually formed as well as expanded by virtue of the procreative powers of the parent-opposed to the doctrine of evolution, which holds that the germ pre-exists in the parent.

The theory of generation, that the embryo is an entirely new creation, not a mere unfolding of preformed structures.

Generation. A theory of conception, according to which the new being is created entirely anew; and receives at once from each parent the materials necessary for Its formation. Also, a new formation.

As well as Epigenema, or Epigennema, is, also, applied to any symptom occurring during a disease, without changing its nature. An accessory symptom. Epiginomenos, Superveniens, has a similar acceptation.

Generation by successive formations.

The doctrine that the embryo is not reformed in the ovum, but arises gradually by the successive changes of the biophoric substance, which in its growth and distribution to the various cells, is modified by various influences, thus causing the cells governed by it to assume diverse functions and structure.