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Definition of Megacephaly
1. Noun. An abnormally large head; differs from hydrocephalus because there is no increased intracranial pressure and the overgrowth is symmetrical.
Exact synonyms: Macrocephaly, Megalocephaly
Generic synonyms: Abnormalcy, Abnormality
Derivative terms: Macrocephalic
Generic synonyms: Abnormalcy, Abnormality
Derivative terms: Macrocephalic
Medical Definition of Megacephaly
1. A condition, either congenital or acquired, in which the head is abnormally large; usually applied to an adult skull with a capacity of over 1450 ml. Synonym: leontiasis ossea, macrocephaly, macrocephalia, megacephalia, megalocephaly, megalocephalia, Virchow's disease. Origin: mega-+ G. Kephale, head (05 Mar 2000)