| Abbreviation | Definition |
|---|---|
| MOPAR | Mostly Oil Paint And Rust |
| MOPAR | Mostly Old Paint And Rust |
| MOPAR | Mostly Old Parts And Rust |
| MOPAR | Move Over People Are Racing |
| MOPAR | Move Over Plymouth Approaching Rapidly |
| MOPAR | My Old Pig Ain't Running |
| MOPAR | My Old Plymouth Adores Reacing |
| MOPAR | My Only Problems Are Repairs |
| MOR | Maudlin Old Rubbish |
| MORE | Music Of Ron And Eric |
| MORMON | My Own Rat Might Own NASA |
| MORMON | My Own Ridiculous Mom Owns Nothing |
| MORSE | My Own Reducted Silly Enigma |
| MOSAIC | Manawatu One Stop Arts Information Centre |
| MOSFET | Massively Obese Sodomised Feild Effect Transistor |
| MOSFET | Mental Operated Semiconductor Feild Effect Transistor |
| MOSH | Masters Of Screaming Hallelujah |
| MOSH | Misinterpreted Original Singapore Hits |
| MOST | Ministry Of Silly Talks |
| MOTU | Mark Of The Unicorn |