from The American Heritage® Dictionary of the English Language, 4th Edition
- Large; of exaggerated size or greatness: megalocephaly.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- large, great or exaggerated
from the GNU version of the Collaborative International Dictionary of English
- See meg-.
from The Century Dictionary and Cyclopedia
- A prefix, meaning ‘great’ or ‘large’; specifically, in physical, a prefix sometimes used in place of the shorter forms meg- and mega- to denote that a unit is multiplied by one million.
Greek, from megas, megal-, great; see meg- in Indo-European roots.(American Heritage® Dictionary of the English Language, Fourth Edition)
From Ancient Greek μέγας. (Wiktionary)