Mid 19th century; earliest use found in Todd's Cyclopaedia of Anatomy and Physiology. From German Microcephalia from micro- + -cephalia. Compare earlier anencephalia, variant of anencephaly.
Definition of microcephalia in US English:
microcephalia
noun
Anthropology Medicine
Microcephaly.
Origin
Mid 19th century; earliest use found in Todd's Cyclopaedia of Anatomy and Physiology. From German Microcephalia from micro- + -cephalia. Compare earlier anencephalia, variant of anencephaly.