MR

See also: mr, Mr, mr., .mr, Mr., M.R., and Appendix:Variations of "mr"

Translingual

Symbol

MR

1. Country code for Mauritania (both via ISO 3166-1 alpha-2 and FIPS 10-4).
2. World Meteorological Organization country code for Martinique.
3. Library of Congress MARC country code for Morocco.
4. (metrology) Symbol for the megarayleigh, a unit of measurement of luminous flux, used to measure air glow.
5. (metrology) Symbol for the megaröntgen (or megaroentgen), an obsolete unit of measurement of radio-active dose.

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English

Proper noun

MR

1. (UK, rail transport) Initialism of Midland Railway.

   Synonym: Midland

Noun

MR

1. Clipping of MRI.
   • 2007 March 30, Elizabeth Mossis, M.D. (guest),“Breast Cancer Screening Guidelines”, Talk of the Nation: Science Friday, Ira Flatow (host), National Public Radio
2. (pharmacology, medicine) Initialism of modified release.
   • 2014 — Seufert, Ken. (April 2014) "The New Dawn of Pharmaceutical Manufacturing: Innovative Solutions for Unprecedented Challenges", American Pharmaceutical Review, 17(3):8.

     Controlled release (CR), modified release (MR), orally disintegrating tablets (ODT), and other innovative dosage forms are still of interest to both pharmaceutical producers and suppliers.

3. (prison system) Initialism of mandatory release.
4. (sports) Initialism of meeting record, the best performance at all occurrences of a particular athletic meeting.

Adjective

MR (not comparable)

1. (education, special education) Initialism of mentally retarded.

Anagrams

• RM, rm, rm.

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Czech

Noun

MR

1. Initialism of magnetická rezonance: MRI

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Icelandic

Proper noun

MR

1. Initialism of Menntaskólinn í Reykjavík (“Reykjavik Junior College”).