MR

MR

1. (metrology) Symbol for the megarayleigh, a unit of measurement of luminous flux, used to measure air glow.

MR

1. (metrology) Symbol for the megaröntgen (or megaroentgen), an obsolete unit of measurement of radio-active dose.

MR

1. (international standards) ISO 3166-1 alpha-2 country code for Mauritania.

   Synonym: MRT (alpha-3)

MR

1. World Meteorological Organization country code for Martinique.

MR

1. Library of Congress MARC country code for Morocco.

MR

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

   Synonym: Midland

MR (countable and uncountable, plural MRs)

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 April, Ken Seufert, “The New Dawn of Pharmaceutical Manufacturing: Innovative Solutions for Unprecedented Challenges”, in 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. (cardiology) Initialism of mitral regurgitation.

   Synonym: MI

4. (biochemistry) Initialism of mineralocorticoid receptor.
5. (prison system) Initialism of mandatory release.
6. (sports) Initialism of meeting record, the best performance at all occurrences of a particular athletic meeting.
7. (US military) Acronym of memorandum for the record, memorandum for record, memo for the record, or memo for record.

   Synonym: MFR

8. (software engineering) Initialism of merge request.

   Synonym: PR

9. (computing) Initialism of mixed reality.
10. Initialism of Master of the Rolls, as a postnominal.

    Lord Denning MR

11. Initialism of mental retardation

MR (not comparable)

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

• R&M, rm., RM, rm

MR

1. initialism of magnetická rezonance: MRI

This noun needs an inflection-table template.

MR

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

This proper noun needs an inflection-table template.

• (SK Standard/Seoul) IPA^(key): [e̞ma̠ɭ]
• Phonetic hangul: [에말]

MR • (MR)

1. (music) initialism of Music Recorded (Music Record ed)

• AR (AR)