megacephaly

Từ điển Oxford Learners Wordfinder Dictionary

noun

an abnormally large head;
differs from hydrocephalus because there is no increased intracranial pressure and the overgrowth is symmetrical
• Syn:
macrocephaly, megalocephaly
• Derivationally related forms:
macrocephalic (for: macrocephaly)
• Hypernyms:
abnormality, abnormalcy