mmr

As a noun rubella

is (pathology) a mild disease caused by the infecting the respiratory tract, and characterised by a rash of pink dots, fever and swollen lymph nodes.

As a symbol mmr is

the iso 3166-1 three-letter (alpha-3) code for myanmar.

As a noun mumps

is mumps.

As a symbol mmr is

the iso 3166-1 three-letter (alpha-3) code for myanmar.