mr

1. abbreviationAbbreviation of millirem.

plural Messrs

1. BritishabbreviationespeciallyAbbreviation of Mister.

   In recent months Mr Balaji had publicly spoken out against artificial intelligence company OpenAI's practices, which has been fighting a number of lawsuits relating to its data-gathering practices.

   2024 December 14, Alys Davies, “OpenAI whistleblower found dead in San Francisco apartment”, in BBC

   1 more example

   [...] Patrick lord Ruthven, Sir John Maxwell of Teregles, knight, William Maitland of Lethington younger, John Wiseheart of Pittarrow, and Mr Henry Balnaves of Hallhill, in name and behalf a noble and mighty prince James, duke of Chatelherault, second person of the realm of Scotland, and the remanent lords of his part, joined with him in this cause [...]

   1560, Treaty of Berwick

2. BritishabbreviationespeciallyAbbreviation of March.

1. UKabbreviationinitialismrail transportInitialism of Midland Railway.

   Synonyms: Midland

plural MRs

1. abbreviationclippingcountableuncountableClipping of MRI (“magnetic resonance image/imager/imaging”).

   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. abbreviationcountableinitialismuncountablemedicineInitialism of modified release.

   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.

   2014 April, Ken Seufert, “The New Dawn of Pharmaceutical Manufacturing: Innovative Solutions for Unprecedented Challenges”, in American Pharmaceutical Review, 17(3):8

3. abbreviationcountableinitialismuncountablecardiologyInitialism of mitral regurgitation.

   Synonyms: MI

4. abbreviationcountableinitialismuncountablebiochemistryInitialism of mineralocorticoid receptor.
5. abbreviationcountableinitialismuncountableprison systemInitialism of mandatory release.
6. abbreviationcountableinitialismuncountablehobbiesInitialism of meeting record, the best performance at all occurrences of a particular athletic meeting.
7. USabbreviationacronymcountableuncountablegovernmentAcronym of memorandum for the record, memorandum for record, memo for the record, or memo for record.

   Synonyms: MFR

8. abbreviationcountableinitialismuncountablecomputingInitialism of merge request.

   Synonyms: PR

9. abbreviationcountableinitialismuncountablecomputingInitialism of mixed reality.
10. abbreviationcountableinitialismuncountableInitialism of Master of the Rolls, as a postnominal.

    Lord Denning MR

11. abbreviationcountableinitialismuncountableInitialism of mortality rate.

    Synonyms: DR, death rate

12. abbreviationcountableinitialismuncountableInitialism of mental retardation, a deprecated former term for intellectual disability.
13. abbreviationcountableinitialismuncountableInitialism of magnetic resonance
14. abbreviationcountableinitialismuncountableInitialism of magnetoresistance
15. abbreviationcountableinitialismuncountablegamesInitialism of magic resistance.

1. abbreviationinitialismnot comparablespecialeducationInitialism of mentally retarded.
2. abbreviationinitialismnot comparableInitialism of magnetoresistive