IR

invisible electromagnetic radiation that has a wavelength of 750 - 1000 micrometers (used for many purposes, such as night vision and targeting advanced weapons)

IR may refer to: Medicine:Insulin resistanceInterventional radiologyImmediate-release (formulation of a drug)Ionizing radiationOther:Information retrieval, the science of searching for information in documents, searching for documents themselves, searching for metadata which describe documents, or searching within databasesInformational Revolution, one of the theoretical frameworks within which trends in current society can be conceptualizedInfrared (electromagnetic radiation)Infrared spectroscopyIn Irish legend, Ir was one of the sons of King Milesius who took part in a semi-legendary invasion of Ireland. Engineer ("Ir" for Ingénieur), someone who practices the profession of engineeringImageReady (Adobe), a bitmap graphics editor shipped with Adobe Photoshop by Adobe SystemsIndian Railways, the state-owned railway company of IndiaIndustrial relations (labor relations)Iridium, The 77th elementIngersoll-Rand Company Limited (NYSE trading symbol IR)Information Resources, sometimes used as an alternative to Information TechnologyInjured reserve, a special sports reserve list for professional teams to use if a player is injured and unable to play for an extended timeInstitutional repository, an online locus for collecting and preserving - in digital form - the intellectual output of an institution, particularly a research institutionInstitutional research, the collection, analysis, and reporting of institutional dataInstrument Rating, refers to the qualifications that a pilot must have in order to fly under Instrument Flight Rules (IFR)International Rules a hybrid code of footballIntegrated Resort, a euphemism for a casino in SingaporeIntermediate representation, a computer data structureInternal Revenue Service, the United States government agency that collects taxes and enforces the internal revenue laws. The IRS is a bureau of the Department of the TreasuryInternational Rectifier Corp., a manufacturer of power semiconductorsInternational relations, a branch of political science, is the study of foreign affairs of and relations among states within the international systemInternational Rescue, the fictional organisation featured in Thunderbirds (TV series)Inter-racial, particularly in the Pornography industry.Inverted repeat, a sequence of nucleotides that is the reversed complement of another sequence further downstreamInvestor relations, a set of activities which relate to the ways in which a company discloses information required for regulatory compliance and good investment judgment to bond and/or shareholders and the wider financial marketsIran (country code: IR, Internet domain: .ir)Iran Air (IATA airline code IR)Iridium (chemical symbol: Ir)Irish Rail, the national passenger and freight railway system of the Republic of IrelandRepublican Party of Minnesota, formerly Independent-Republican Party of MinnesotaIncident reportI. R. Baboon from the cartoon series I am WeaselSpanish word meaning to goHebrew word meaning city
See more at Wikipedia.org...

.ir is the Internet country code top-level domain (ccTLD) for Iran. It is managed by the Institute for Studies in Theoretical Physics and Mathematics.
See more at Wikipedia.org...

Noun
1. a board of the British government that administers and collects major direct taxes
(synonym) Inland Revenue
(hypernym) administrative unit, administrative body
(classification) United Kingdom, UK, Great Britain, GB, Britain, United Kingdom of Great Britain and Northern Ireland

Noun
1. a heavy brittle metallic element of the platinum group; used in alloys; occurs in natural alloys with platinum or osmium
(synonym) iridium, atomic number 77
(hypernym) metallic element, metal

Ir, iridium, precious metallic element of the platinum group (Chemistry)

infra red, invisible rays just beyond the red of the visible spectrum that have a penetrating heating effect