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What does the medical abbreviation MMR mean?

Answer:
MMR normally stands for measles/mumps/rubella, but in some contexts might stand for mutually monogamous relationship.
Measles, Mumps, Rubella.
First answer by Peakaytea. Last edit by Peakaytea. Contributor trust: 149 [recommend contributor recommended]. Question popularity: 16 [recommend question].