The American Heritage® Dictionary of the English Language, 4th Edition
n. See macrocephaly.
The Century Dictionary and Cyclopedia
n. Same as macrocephaly.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
n. an abnormally large head; differs from hydrocephalus because there is no increased intracranial pressure and the overgrowth is symmetrical
Word Usage
"Starr 15.160 describes what he supposes to be a case of this disease, and proposes the title megalocephaly as preferable to Virchow's term, because the soft parts are also included in the hypertrophic process."