4 definitions
for mega-
From The Collaborative International Dictionary of English v.0.48 :
Meg- \Meg-\ (m[e^]g-), Mega \Meg"a\ (m[e^]g"[.a]-), Megalo-
\Meg"a*lo-\ (m[e^]g"[.a]*l[-o]-). [Gr. me`gas, gen. mega`loy,
great.]
Combining forms signifying:
(a) Great, extended, powerful; as, megascope, megacosm.
(b) (Metric System, Elec., Mech., etc.) A million times, a
million of; as, megabyte, a million butes; megawatt, a
million watts; megameter, a million meters; megafarad, a
million farads; megohm, a million ohms.
[1913 Webster +PJC] Megacephalic
From Virtual Entity of Relevant Acronyms (Version 1.9, June 2002) :
MEGA
MessdatenErfassung und Graphische Auswertung
From Jargon File (4.3.1, 29 Jun 2001) :
mega- /me'g*/ pref. [SI] See {quantifiers.
From The Free On-line Dictionary of Computing (27 SEP 03) :
mega-
prefix