Definition of "microcephalism" []

• A microcephalic condition. (noun)

The Century Dictionary (Public Domain)

• "Dr. Langenbeck mentions a family of Silesian peasants who seemed to have an hereditary predisposition to the abnormity known as microcephalism, or small-headedness."
• "The instances of reversion here discussed are microcephalism, which Darwin wrongly interpreted as atavistic, supernumerary mammae, supernumerary digits, bicornuate uterus, the development of abnormal muscles, and so on."
• "(microcephalism) and reversion to lower forms are next discussed."