What does MMR stand for?

Magnetometric Restivity (method for Subsurface Characterization)

Mismatch Repair

Mismatch repair is strand-specific. During DNA synthesis the newly synthesised (daughter) strand will commonly include errors. In order to begin repair, the mismatch repair machinery distinguishes the newly synthesised strand from the template (parental).

Multi Mode Receiver

Maternal Mortality Rate

Monthly Medical Report

Matchmaking Rating

The Matchmaking Rating, or MMR, is a number that determines each player's skill level. In matchmaking, this value is used. Winning raises a player's MMR, but losing lowers it.