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F is the sixth letter of the Latin alphabet. It can also refer to: Look up F, f in Wiktionary, the free dictionary. ...
The Latin alphabet, also called the Roman alphabet, is the most widely used alphabetic writing system in the world today. ...
- In acoustics, F is the abbreviation for the formant that ordered with its frequency from low to high.
- In astronomy,
- F stands for a whitish class of stars in the Morgan-Keenan system.
- F stands for a March 16 through 31 discovery, in the provisional designation of a comet (e.g. D/1993 F2, Comet Shoemaker-Levy 9) or asteroid (e.g. mpl|(3708) 1974 FV|1).
- In the atmosphere of Earth, the F layer is part of the ionosphere.
- In biochemistry, F is the symbol for phenylalanine.
- In calendars, F is often an abbreviation for Friday, or for February.
- In chemistry,
- In communications, F sometimes stands for fax number.
- In computer science,
- In education, F is a low, usually failing, grade.
- In electronics, an F connector (i.e. used for inlet in cable modems). [1]
- In finance, F is the New York Stock Exchange ticker symbol for Ford Motor Company.
- In genetics,
- F stands for a generation descended from a parent generation.
- Haplogroup F (Y-DNA) is a patrilineal haplogroup.
- Haplogroup F (mtDNA) is a matrilineal haplogroup.
- In linguistics, f is often an abbreviation for the feminine grammatical gender.
- In forms and personal documents, F is often used as an abbreviation for female.
- In information retrieval, F is the F-measure or balanced F-score, the harmonic mean of precision and recall
- In international license plate codes, F stands for France.
- In American law, F. stands for the Federal Reporter.
- In mathematics,
- In meteorology, F is the abbreviation for the Fujita-Pearson Tornado Scale that classifies tornadoes according to damage and associated wind speeds (F0 through F5).
- In military aviation, F- is used in the USAF and USN designations for fighters (ex. USAF F-15), FA- for fighter/attack (USN/USMC, ex. FA-18) and FB- for fighter bombers (ex. USAF FB-111).
- In the SI system,
- In music,
- In optics, f denotes the focal length.
- In pharmacokinetics, F denotes bioavailability.
- In photography, f denotes the focal length or the f-number.
- In physics,
- In printing, f. is an abbreviation for folio (page in a book), although it is more common to the plural form ff.
- In probability theory and statistics, the F-distribution is a probability distribution.
- In propositional logic F is the symbol for false.
- In radio,
- the NATO F band ranges from 3 to 4 GHz.
- In radiocommunication, F is one of the ITU prefixes allocated to France.
- °F is the symbol for degree Fahrenheit (a single-character version U+2109 ℉ is included in Unicode, but is only there for backward compatibility and should not be used in new documents).
- In slang, F can be a euphemism for the word fuck.
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