microcephaly

adjective Cephalometry, Pathology.

1. having a head with a small braincase.

noun

1. the condition of having an abnormally small head or cranial capacityCompare megacephaly

adj.“small-headed,” 1845, from French microcéphalique, from Modern Latin microcephalus, from Greek mikros “small” (see mica) + kephale “head” (see cephalo-). Related: Microcephalism; microcephalous (1840); microcephaly (n.). n.

1. Abnormal smallness of the head.nanocephaly