Mmo definitions

MMO

Massively multiplayer online
Found on http://www.chatslang.com/terms/online_gaming

---

mmo

Massive Multiplayer Online
Found on http://www.noslang.com/dictionary/m/

---

MMO

Mercury Magnetospheric Orbiter, JAXA space probe to Mercury
Found on http://www.translationdirectory.com/glossaries/glossary142.htm

---