MR

n. information storage technology on hard disks which allows a significant expansion of storage volume (Computers)

n. title of courtesy placed before a man's last name

Mr. is a written abbreviation of Mister.MR. may also refer to:PlacesMagyar Rádió, a Hungarian radio stationMauritania country codeMenntaskólinn í Reykjavík, a secondary school in IcelandPeople and organisationsAir MauritaniaMahinda Rajapaksa, President of Sri LankaMaster Replicas, a maker of prop replicasMathematical Reviews, a database of reviews of mathematics publicationsMidland RailwayMouvement Réformateur, a Belgian political partyMacRumors.com
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.mr is the Internet country code top-level domain (ccTLD) for Mauritania. A local contact is required to register a domain name under .mr. Registrations are taken directly at the second level, but a .gov.mr second level domain exists in which governmental sites can be found at the third level.
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Mr or Mr. is an English honorific used for a man too old to be addressed as Master, under the rank of knighthood, and, supposedly though not really in practice, above some undefined level of social status (see below). In Britain, though not in the United States, the title also excludes those who have the title Dr. It is an abbreviation of Mister, though it is almost never spelt out in normal usage. The plural of Mr is Messrs (IPA pronunciation: ), an abbreviation for the French messieurs.
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Noun
1. a form of address for a man
(synonym) mister
(hypernym) man, adult male

mr, mister, title of respect for a man that is prefixed to his name

monsieur, mister, term of respect for a man