Look up if in Wiktionary, the free dictionary.

If is a very common English word used in the protasis of a conditional sentence and the antecedent of a proposition. It is often used in computer languages to indicate a conditional. Wikipedia does not have an article with this exact name. ... Wiktionary (a portmanteau of wiki and dictionary) is a multilingual, Web-based project to create a free content dictionary, available in over 150 languages. ... The list below of most common words in English, like any superlative list, cannot be definitive. ... In linguistics, a protasis is the subordinate clause (the if-clause) in a conditional sentence. ... In grammar, conditional sentences are sentences discussing factual implications or hypothetical situations and their consequences. ... An antecedent is the first half of a hypothetical proposition. ... This article is about the word proposition as it is used in logic, philosophy, and linguistics. ... “Then” redirects here. ...

If is also

• If (island), a small island in the Bay of Marseille, France
• If (magazine), subtitled "Worlds of Science Fiction"
• "If" (song), any of several songs

When followed by various forms of punctuation, If can refer to: city flag coat of arms Motto: By her great deeds, Marseille shines in the world Coordinates : , Time Zone : CET (GMT +1) Administration Subdivisions 16 arrondissements (in 8 secteurs) Département Bouches-du-Rhône (13) Région Provence-Alpes-Côte dAzur Mayor Jean-Claude Gaudin (UMP) (since 1995... if, subtitled Worlds of Science Fiction, was launched in March 1952, the creation, apparently, of James L. Quinn of the Quinn Publishing Company, not to be confused with Robert Guinn, who later published both If and its sister magazine Galaxy. ... If was a 1993 hit song by pop music diva Janet Jackson. ...

• "If—", the Rudyard Kipling poem
• If?, a dance band of the late 1980s and early '90s
• If..., a political comic strip which appears in the UK newspaper The Guardian
• If..., a series of BBC drama-documentaries
• if...., a 1968 cult film starring Malcolm McDowell

As an abbrevation, IF can refer to Edition of If by Doubleday Page and Company, Garden City, New York, 1910. ... If? were an indie-dance band of the late 1980s and early 1990s signed to MCA Records. ... This refers to the comic, for other uses see If. ... If. ... For other uses, see If. ...

• IF (x86 flag), the Interrupt Flag in the x86 architecture
• Immunofluorescence, a form of labeling substances with radioactive antibodies
• Impact Factor, a measure of the importance of scientific journals
• In Flames, a melodic death metal band from Sweden
• Initiation factor, an important component in protein synthesis
• Intelligent falling, alternative theory of gravitation
• Interactive fiction, text-based computer games featuring interactive stories and environments
• Intermediate filament, a component of the cytoskeleton
• Intermediate frequency, an intermediate step in radio transmission or reception
• Internal focusing, a lens technology in which focusing occurs only with internal elements

Businesses named "If" or abbreviated "IF" include: IF (Interrupt Flag) is a system flag bit in the x86 architectures FLAGS register, which determines whether or not the CPU will handle maskable hardware interrupts. ... Immunofluorescence is the labeling of antibodies or antigens with fluorescent dyes. ... The Impact factor, often abbreviated IF, is a measure of the citations to science and social science journals. ... In Flames is a melodic death metal band from Gothenburg, Sweden founded in 1990. ... Biological and artificial methods for creation of proteins differ significantly. ... Intelligent falling (IF) is a parody of the intelligent design (ID) movement. ... Zork I is one of the first interactive fiction games, as well as being one of the first commercially sold. ... // Intermediate filaments (IFs) are important structural proteins which are located both in the cytoplasm and the nucleus. ... An intermediate frequency (IF) is a frequency to which a carrier frequency is shifted as an intermediate step in transmission or reception. ... An internal focus lens (sometimes known as IF) is a photographic lens design in which focus is shifted by moving the inner lens group or groups only, without any rotation or shifting of the front lens element. ...

• If (insurance company), in the Nordic countries
• IF? Records, a Tokyo-based electronic music label
• Intelligent Finance, a bank
• International Forum Design (iF), a society best-known for its iF design awards
• InvisionFree, an Internet service provider
• Islas Airways (IF is its IATA airline designator)

Sampo is a Finnish company in banking and insurance. ... Established in Melbourne, Australia, in 1995, and currently based in Tokyo, Japan, after relocating there in 2001, IF? Records was one of Melbournes first independent local electronic music labels, as well as a prolific live gig and rave party organiser in this city in the 90s. ... Intelligent Finance (IF) is a telephone and internet based commercial bank in the United Kingdom, a division of Halifax plc which is part of HBOS plc. ... The iF logo. ... Perhaps the greatest Invisionfree site is Allure Addiction. ... Islas Airways is an airline based in Tenerife, Spain. ...

See also

• If and only if, iff, indicating necessary and sufficient conditions
• IFF
• All pages beginning with If

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