microcephalous Meaning, Definition & Usage

  1. adjective having an abnormally small head and underdeveloped brain
    nanocephalic; microcephalic.
    • a nanocephalic dwarf

WordNet

Mi`cro*ce*phal"ic, Mi`cro*ceph"a*lous adjective (Also<
  • Microcephalic
  • Microcephalous
)
Etymology
Micro- + cephalic, cephalous.
Definitions
  1. (Anat.) Having a small head; having the cranial cavity small; -- opposed to megacephalic.

Webster 1913