Examples from the Web for preformation
Preformation, identical with the original meaning of evolution, which see.
In this respect it is like its predecessor, the theory of preformation of the eighteenth century.
Preformation: the doctrine of growth or development from already existing rudiments; opposed to epigenesis: q.v.Explanation of Terms Used in Entomology|John. B. Smith
Let us first cast a historical glance at the older ontogeny, and the theory of preformation which is connected with it.
His shrewd comment on the preformation notion of development has been quoted (p. 20).Pioneers of Evolution from Thales to Huxley|Edward Clodd