MP /ˌem ˈpiː/ noun [countable]

1. (Member of Parliament) someone who has been elected to a parliament to represent people from a particular area of the country:
Ken Newton, MP
a Labour MP
MP for
She’s the MP for Liverpool North.

2. informal a member of the military police

[TahlilGaran] Dictionary of Contemporary English ▲

MP3 /ˌem piː ˈθriː/ noun [countable] trademark
a recording of music that can be downloaded from the Internet

[TahlilGaran] Dictionary of Contemporary English ▲

MP
Member of Parliament - used in the United Kingdom and Canada etc.
There were several MPs at the restaurant where we had dinner.

[TahlilGaran] English Idioms Dictionary ▲

MP3
MPEG-1 audio layer 3 - a method to compress digital audio
The three students listened to their MP3 players as they worked in the computer lab.

[TahlilGaran] English Idioms Dictionary ▲

MP
Member of Parliament 
Military Police 
Monty Python 
Mouse Pad 
My Pleasure

[TahlilGaran] Acronyms and Abbreviations Dictionary ▲

MP3
Moving Picture Experts Group Layer-3 Audio (audio file format/extension)

[TahlilGaran] Acronyms and Abbreviations Dictionary ▲