D (disambiguation)
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D is the fourth letter of the Latin alphabet. It can also refer to the following:
Business and economy
- D, denoting the Federal Reserve Bank of Cleveland in the serial numbers of United States dollars
- D, Mitsubishi Electric's mobile phones in Japan
- D, the New York Stock Exchange ticker symbol for Dominion Resources
- D: All Things Digital, an annual technology conference sponsored by the Wall Street Journal, produced and hosted by columnist Walter Mossberg
Computing
- D, the name of various programming languages:
- D (programming language), a C++-like programming language developed by Walter Bright
- D, a programming language designed to be used with the DTrace dynamic tracing framework
- Tutorial D, a database query language
- D (data language specification), the basis for Tutorial D and others
- Filetab-D / Filetab a language based on decision tables
- D, the "Minimal Protection" security division in the TCSEC
- d (short for daemon), a suffix often added to the name of a computer program that runs as a background process
- .d, a common pathname component suffix for a directory for a program or subsystem on POSIX and POSIX-like systems; for example "/etc/init.d" would be a directory which contains files associated with the init program.
- .d, a file format used for Agilent MassHunter mass spectrometry software
Entertainment and film
- D (film), a 2005 Bollywood film
- D Magazine, a magazine for the city of Dallas, Texas
- D, a weekly supplement to the Italian newspaper la Repubblica
- D (series), a video game series
- D (video game), a game released in 1995 for the PC, 3DO, PlayStation and Sega Saturn
- Count D, a character in the anime/manga series Pet Shop of Horrors
- D is the character in a series of novels titled Vampire Hunter D by Hideyuki Kikuchi
- D is a nickname given to Count Dracula in the novel Dracula written by Bram Stoker
- D, one of the characters in Another Code: Two Memories (Trace Memory)
- Initial D, a 1995 Japanese manga and anime about mountain drifting that has spawned several arcade and console games
- Substance D, a fictional recreational drug in the novel and film A Scanner Darkly
Music
- D (musical note)
- The D major scale or chord
- The D minor scale or chord
- D followed by a number can indicate a composition by Franz Schubert according to the Schubert Thematic Catalogue by O. E. Deutsch
- D (or D-274), a concert grand piano manufactured by Steinway & Sons
- D Records, a former record label in Houston, Texas
Bands and musicians
- D (band), a Japanese rock/metal band
- "The D", one of the names of comedy rock band Tenacious D
- "d:" or "d:?", often used to refer to the Christian rock band Delirious?
- "D!" or "Dee!", names of Detlef Soost, a German dancer and choreographer
- D, the bass player for Australian band Testeagles
Albums
- D (Os Paralamas do Sucesso album), 1987
- D (White Denim album), 2011
- D (Deuter album), 1971
- Substance D, a drum and bass compilation album by Dieselboy
Science
Astronomy
- D, the white dwarf stellar classification
- D/, for "destroyed/disappeared" in comet nomenclature
- D, a February 16 through 29 discovery in the provisional designation of a comet or asteroid
Chemistry and biology
- D, the symbol for aspartic acid in biochemistry
- D, the symbol of deuterium, an isotope of hydrogen, in chemistry
- Vitamin D
- ATC code D Dermatologicals, a section of the Anatomical Therapeutic Chemical Classification System
Genetics
- Haplogroup D (mtDNA), a human mitochondrial DNA (mtDNA) haplogroup
- Haplogroup D-M174 (Y-DNA), a Y-chromosomal DNA (Y-DNA) haplogroup
Places
- D (for Deutschland), the international license plate code of Germany
- The D River, in Oregon, USA
- A nickname for Detroit
Mathematics
- d, the symbol for the total differential operator (partial differentials use ∂)
- D, often used as a digit meaning thirteen in hexadecimal and other positional numeral systems with a radix of 14 or greater
- Blackboard bold
, representing the unit disk in the complex plane, or the decimal fractions (see number) - d, often a variable for the diameter of a circle in geometry
- D and d, the derivative operators
- D, the number five hundred in Roman numerals
- in number theory d(n) is the number of positive divisors of an integer n
Physics
- D, the recommended symbol for electric displacement field
- d, the recommended symbol for: thickness, diameter, relative density (mechanics), lattice plane spacing (solid state physics), and degeneracy of vibrational mode, in molecular spectroscopy
- d, the symbol of the deuteron in particle physics
- D, the symbol for debye, a unit of electrical dipole moment
- D battery, a standard size dry cell battery in electronics
- D, the name of mesons containing charm quarks in particle physics
- D, the abbreviation for diopter (US), a unit of measurement of the optical power of a lens or curved mirror (also in Medicine)
- D, the recommended symbol for diffusion coefficient in molecular physics
- In solid state physics:
- D, the recommended symbol for the Debye–Waller factor
- D as a function of energy, D(E), or wavenumber, D(k), a symbol for the density of states
- D, the standard abbreviation for an electronic diode, used e.g. in circuit diagrams
Other science
- D region, part of the ionosphere in earth science
- D, standing for demand in economics
- d (deci-), the SI prefix meaning one tenth, 10−1
- d, the symbol for day in metrology
- d', a sensitivity index
- [d] or /d/, in the International Phonetic Alphabet (IPA) represents a voiced alveolar stop consonant
Other uses
- D, in American politics, often used as an abbreviation for a Democrat (member of the Democratic Party)
- D, a brassiere cup size
- d, used in role-playing games to denote the number of sides of dice
- d (from the Latin denarius), an abbreviation for the British one penny coin
- d, the common US measurement of the penny size (an approximation of length), of a nail (derived from denarius- as above)
- D, in calendars an abbreviation for the month December
- D (grade), a below average grade in education
- D (drive), the forward cruising gears in an automatic transmission
- D (New York City Subway service)
- D (Los Angeles Railway), a line operated by the Los Angeles Railway
- D band, in radio, the NATO band ranging from 1 to 2 GHz
- D, often used in sports as an abbreviation for defense
- D/, used to denote the dominant person in a BDSM relation
- superscript D, the abbreviation for Dingir, the Sumerian sign for "deity"
- D's, colloquial term for Dayton Wire Wheels
- d., died
- d, daughter
- D-Company
- D, diarrhea
- 'd, a contraction (grammar) of the English words had and would
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This disambiguation page lists articles associated with the title D.
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