macrocephaly

adjective

1. Cephalometry. being or having a head with a large cranial capacity.
2. Craniometry. being or having a skull with a large cranial capacity.

noun

1. the condition of having an abnormally large head or skull

adj.1851, from Greek makrokephalos; see macro-. Second element is from Greek kephale “head” (see cephalo-). Related: Macrocephalous; macrocephaly. n.

1. Abnormal largeness of the head.megacephaly megalocephaly