The Collaborative International Dictionary
Spermism
Spermism \Sperm"ism\, n. [Gr. ? seed, sperm + -ism.] (Biol.) The theory, formerly held by many, that the sperm or spermatozo["o]n contains the germ of the future embryo; animalculism.
Wiktionary
spermism
n. The belief held by spermists.