The Collaborative International Dictionary
Microcephalic \Mi`cro*ce*phal"ic\, Microcephalous \Mi`cro*ceph"a*lous\, a. [Micro- + cephalic, cephalous.] (Anat.) Having a small head; having the cranial cavity small; -- opposed to megacephalic.
Wiktionary
a. microcephalic
WordNet
adj. having an abnormally small head and underdeveloped brain; "a nanocephalic dwarf" [syn: microcephalic, nanocephalic]
Usage examples of "microcephalous".
Many microcephalous idiots babble words without understanding their meaning, like little children.
On the other hand, the speechless infant certainly furnishes the proof, which is confirmed by some observations on microcephalous persons several years old or of adult age.
For microcephalous children of some years of age are a substitute for imaginary, because never practicable, vivisectory experiments, concerning the connection of body and mind.
If the sensuous impressions experienced anew in each case by each human being, and the original movements, were sufficient without the development of the cerebral convolutions and of the gray cortex, then these microcephalous beings, upon whom the same impressions operated as upon other new-born children, must have had better brains and must have learned more.