Quantcast
Merriam-Webster Logo
  • Dictionary
  • Thesaurus
  • Scrabble
  • Spanish Central
  • Learner's Dictionary

mR

abbreviation

Definition of mR

  1. milliroentgen




Medical Dictionary

mR

abbreviation

Medical Definition of mR

  1. milliroentgen




MR

abbreviation

Medical Definition of MR

  1. magnetic resonance




Learn More about mr

  1. Medical Dictionary: Definition of "mR"


Seen and Heard

What made you want to look up mR? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

to dishevel or rumple

Get Word of the Day daily email!

WORD GAMES

Take a 3-minute break and test your skills!

alt-5746713d76276

Which of these is a synonym of nonplus?

disapprove reduce perplex soothe
Name That Thing

Test your visual vocabulary with our 10-question challenge!

TAKE THE QUIZ
SCRABBLE® Sprint

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ