spermism

from The Century Dictionary.

• noun The theory or doctrine that the male sperm contains the whole germ of the future animal, which develops entirely from a spermatozoön, the ovum serving merely as a mold or matrix; animalculism. Also spermatism.

from the GNU version of the Collaborative International Dictionary of English.

• noun (Biol.) The theory, formerly held by many, that the sperm or spermatozoön contains the germ of the future embryo; animalculism.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun The belief held by spermists.