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Meanings and definitions for RI
What does RI stand for? What does RI mean?
- Ri, a common Korean surname, a variant romanization of Lee
- Rí (rig), an ancient Gaelic word meaning "king"
- Ri, a proposed gender-neutral pronoun for gender reform in Esperanto
- RI, an initialism of Rex Imperator (king-emperor) or Regina Imperatrix (queen-empress), used by those British monarchs who were rulers of both the United Kingdom and the Indian Empire
- Ri (administrative division), an administrative unit in both North Korea and South Korea
- Ri, Orne, a commune of the Orne département in France
- RI, abbreviation of either the Republic of Indonesia or, in the Indonesian language, Republik Indonesia
- Rhode Island, a state within the US (postal abbreviation RI)
- Ri, an augmented second in solfege, used in music education
- Ri, a representation of the second svara in Indian classical music
- Russia Insider, a news website
- Raffles Institution, a school in Singapore
- Refugees International, an international humanitarian organization
- Rehabilitation International, an international disability rights organization
- Rotary International, international organization of business and professional leaders focused on non-political and non-sectarian humanitarian service
- Royal Institution of Great Britain, an organisation devoted to scientific education and research
- Royal Institute of Painters in Water Colours, a society in the Federation of British Artists
- Chicago, Rock Island and Pacific Railroad (reporting mark RI)
- TVRI (Televisi Republik Indonesia), a state-owned, public broadcasting television network in Indonesia
- Tigerair Mandala (IATA airline designator RI)
- Italian Radicals, a political party in Italy
- Referential integrity, a database concept
- Refractive index of an optical medium (in physics/optics) is a number that describes how light propagates through that medium
- Arterial resistivity index, a measure of pulsatile blood flow
- Ring Indicator, a signal in the RS232 serial communications standard
- Rhombicosahedron, a polyhedron, by Bowers acronym
- Residual income, a financial profitability measure of a company
- Reputation Institute, a research and insights company that analyzes the reputation of corporations and places
- Ri (kana), a Romanization of the Japanese kana り and リ
- Ri, a unit of measurement in Japan and Korea related to the Chinese li
- Rock Island District, a commuter rail line on Chicago's Metra (abbreviated as RI on maps and schedules)
- Isaac ben Samuel, known as the Ri ha-Zaken, a 12th-century French tosafist and Biblical commentator
- Riri Fitri Sari (born 1970) computer engineering professor
- Riri Riza (born 1970) Indonesian filmmaker
- Rihanna (born 1988; as Robyn Rihanna Fenty) Barbadian singer; nicknamed "RiRi"
- Riri (Japanese singer) (born 1999; as Riri Arai)
- Riri Williams (Marvel Comics) aka Ironheart
- Riri (folk character) a character from the legend of Tana and Riri
- Satō Rirī (videogame character) a character from the faux-Japanese visual novel Katawa Shoujo
- RiRi (song), a 2016 song by Young Thug off the mixtape No, My Name is Jeffery
- Ris, Puy-de-Dôme, a commune in the Puy-de-Dôme department, France
- Ris, Hautes-Pyrénées, a commune in the Hautes-Pyrénées department, France
- Ris, Norway
- Ris, an upscale American restaurant in Washington, D.C.
- Diane Ris (1932–2013), Catholic nun, educator and author
- Friedrich Ris (1867–1931), Swiss physician and entomologist
- Sweetbread, a type of offal, also known as ris
- Imaginary Realities, a MUD community online magazine
- Integrated resort, a euphemism for a casino in Singapore
- I.R. Baboon, a fictional character in the cartoon series I Am Weasel
- Illinois Railway, US
- Indian Railways, the state-owned railway company of India
- Iran Air (IATA airline code)
- IR Ishikawa Railway, the local railway company in Ishikawa, Japan
- Iarnród Éireann (Irish Rail), the national passenger and freight railway system of the Republic of Ireland
- Israel Railways, the state-owned railway company of Israel
- Ingersoll Rand (NYSE trading symbol IR)
- International Rectifier, a former manufacturer of power semiconductors
- Independent-Republican Party of Minnesota, former name of the Republican Party of Minnesota
- Incidence rate (market research)
- Interest rate, or (when referring to an asset class) interest rate derivative
- Information ratio, when referring to risk-adjusted returns of a financial security
- Investor relations, a management responsibility in which companies disclose information for regulatory compliance and for bond/share-holders to make investment judgments
- Immediate-release, related to time release technology in pharmaceuticals
- Incidence Rate, in epidemiology
- Insulin receptor, a transmembrane receptor that is activated by insulin
- Insulin resistance, a pathological condition
- Interventional radiology and interventional radiologist, an independent medical specialty
- Inverted repeat, a sequence of nucleotides that is the reversed complement of another sequence further downstream
- .ir, the Internet country code top-level domain for Iran
- Adobe ImageReady, a bitmap graphics editor shipped with Adobe Photoshop by Adobe Systems
- Image retention, the LCD and plasma display equivalent of screen burn
- Information retrieval, the science of searching for information in or as documents or databases
- Information revolution, one of the theoretical frameworks within which trends in current society can be conceptualized
- Institutional repository, a digital collection for preserving the intellectual output of an institution
- Institutional research, the collection, analysis, and reporting of institutional data
- Instruction register, part of a CPU's control unit
- Intermediate representation, a computer data structure
- Internal router
- Ir (newspaper), Latvian weekly newspaper
- Infrared, a portion of the electromagnetic radiation spectrum
- Impulse response, an output function of a dynamic system presented with a brief input signal
- Insulation resistance, a measure of how well the insulation material is performing in an electric appliance
- Ionizing radiation
- Iridium (chemical symbol Ir), the 77th element
- Ir language
- Ir (cuneiform), a sign in cuneiform writing
- Ingenieur, abbreviated as ir., an engineer's degree awarded by technical universities in the Netherlands, Belgium, Indonesia, and Malaysia.
- Injured reserve list, a reserve list for professional teams to use if a player is injured and unable to play for an extended time
- International rules football a hybrid code of football
- Iran (ISO country code IR)
- International relations, in political science, the study of foreign affairs of and relations among states
- International Relations (journal), an academic journal
- ℝ, the symbol of the set of real numbers in mathematics
- Receiving & Inspection
- Reference Implementation
- (the) Robotics Institute
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