Pathological terminology includes the following nomenclature: macrocephaly, sub-macrocephaly, submicrocephaly, microcephaly.
In rickets, for instance, macrocephaly may occur in conjunction with a normal or even supernormal intelligence (Leopardi).
If we find a circumference greater than normal, we are beginning to enter upon the anomaly which goes by the name of macrocephaly.
macrocephaly mac·ro·ceph·a·ly (māk'rō-sěf'ə-lē) or mac·ro·ce·pha·li·a (-sə-fā'lē-ə, -fāl'yə)
Abnormal largeness of the head. Also called megacephaly, megalocephaly.