nanocephalia


mi·cro·ceph·a·ly

(mī'krō-sef'ă-lē), Abnormal smallness of the head; applied to a cranium with a capacity less than 1350 mL. Usually associated with mental retardation. Synonym(s): microcephalia, microcephalism, nanocephalia, nanocephaly [micro- + G. kephalē, head]