头异常小的
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}.
microcephalous adj : having an abnormally small head and underdeveloped brain; "a nanocephalic dwarf" [syn: {microcephalic}, {nanocephalic}]