MAabbr.1. Latin Magister Artium (Master of Arts)2. Maritime Administration3. Massachusetts4. mental agema (mä, mô)n. Informal Mother.[Short for mama.]mAabbr. milliampereAmerican Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.ma (m??) n an informal word for mother1ma the internet domain name for (Computer Science) Morocco Ma (m??) n (Biography) Yo-Yo (?j??j??). born 1955, US cellist, born in France to Chinese parentsMA abbreviation for 1. (Placename) Massachusetts 2. (Education) Master of Arts 3. (Psychology) psychol mental age 4. (Military) Military Academy 5. (Automotive Engineering) Morocco (international car registration) [from French Maroc]Collins English Dictionary ? Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014ma (m?) n., pl. mas. mother. [akin to mama] MA Massachusetts. mA milliampere. M.A. Master of Arts. [