Definition of mR
(Entry 1 of 2)
milliroentgen
Mr.
nounvariants:
US Mr. or British Mr
Definition of Mr. (Entry 2 of 2)
1 —used as a conventional title of courtesy except when usage requires the substitution of a title of rank or an honorific or professional title before a man's surnamespoke to Mr. Doe
2 —used in direct address as a conventional title of respect before a man's title of officeMay I ask one more question, Mr. President?
3 —used before the name of a place, profession, or activity or before an epithet (such as clever) to form a title applied to a male viewed as representative of the thing indicatedMr. Baseball
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Time Traveler for mR
The first known use of mR was in the 15th century
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