- informal terms for a mother
同义词：ma, mama, mamma, mom, momma, mommy, mammy, mum, mummy
- a master's degree in arts and sciences
同义词：Master of Arts, MA, Artium Magister, AM
- one thousandth of an ampere
同义词：milliampere, mA
- a state in New England; one of the original 13 colonies
同义词：Massachusetts, Bay State, Old Colony, MA
