I (disambiguation)
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Look up I, i, i-, or -i in Wiktionary, the free dictionary. |
I is the ninth letter of the Latin alphabet.
I or i may also refer to:
Language
- I (pronoun), the first-person singular subject pronoun in English
- I (Cyrillic), a letter used in almost all ancient and modern Cyrillic alphabets
- Close front unrounded vowel (i), in the International Phonetic Alphabet
- Close central unrounded vowel (ɨ), in the International Phonetic Alphabet
- Near-close near-front unrounded vowel (ɪ), in the International Phonetic Alphabet
- I (kana), one of the Japanese kana that each represent one mora
Mathematics
- 1 (number) (Roman numeral: I)
- Imaginary unit (i), for which i2 = −1
- Identity matrix (I or In), of indeterminate size (or of size n)
- Unit interval (I), which contains all real numbers from 0 to 1 inclusive
- i, an index variable in a matrix
- Ix(a,b), the regularized incomplete beta function (of a variable x and parameters a,b)
- î, the unit vector along the x-axis in Cartesian coordinates
Science
Biology
- Haplogroup I (mtDNA), a human mitochondrial DNA (mtDNA) haplogroup
- Haplogroup I (Y-DNA), a Y-chromosomal DNA (Y-DNA) haplogroup
- Olfactory nerve, 1st cranial nerve, in anatomy
Chemistry
- Iodine (symbol I), a chemical element
- Isoleucine (I), an amino acid
- Ionic strength (I), in a chemical solution
Physics and astronomy
- Electric current (I, i)
- Moment of inertia (I)
- Luminous intensity (I)
- Van 't Hoff factor (i),
- Orbital inclination (i), in astronomy
- I, in the Yerkes spectral classification scheme, the symbol for supergiants
Computing
-
i
, a common generic index variable often used in program loops -
<i>
, an HTML element for marking italic type -
.i
, the common filename extension for a file that contains the output from a preprocessor - IBM i, a computer operating system
- i-, a prefix for Apple products e.g. iMac, iPod, iPhone
- i-, an Internet-related prefix used by Internet and electronic companies
Music
- I (band), a Norwegian heavy metal band
- i (label), a UK indie record label
- I, a diatonic function in tonal music theory
Albums
- i (A.R. Kane album)
- I (Cilvaringz album)
- I (Die Krupps album)
- I (Ikimono-gakari album)
- I (Jaejoong EP)
- I (JonnyX and the Groadies album)
- I (Kingston Wall album)
- I (Kurt Nilsen album)
- i (The Magnetic Fields album)
- I (Meshuggah EP), 2004
- i (Misako Odani album)
- I (Nightingale album)
- I (Xerath album)
Songs
- "I" (Aphex Twin song)
- "I" (Kendrick Lamar song)
- "I", a song on Dehumanizer, an album by Black Sabbath
- "I", a song on Weather Systems, an album by Andrew Bird
- "I", a song on Coal Chamber, an album by Coal Chamber
- "I", a song on Music from "The Elder", an album by KISS
- "I", a song on Eternal, an album by Samael
- "I (Who Have Nothing)", a 1966 Ben. E. King song also recorded by Tom Jones, who used the title for one of his albums
Media
- I (film), a 2015 Tamil language Indian film
- i, a suffix unit for video resolution (vertical Interlaced lines), as in 480i or 1080i
- i (TV network), the former name of ION Television
- I band, the range of radio frequencies from 8 GHz to 10 GHz in the electromagnetic spectrum
- I, the ITU prefix allocated to Italy in radio communication
- I, in QAM modulation schemes, the in-phase communications channel
- I, in the YIQ colorspace commonly used with the NTSC television encoding scheme, the color-difference channel which is in-phase with the subcarrier
- i (newspaper), a British newspaper
- i, the international symbol for visitor or tourist information; see ISO 7001
Characters
- Goddess I, a Mayan deity
- Hou-i, or I, a heroic archer and hunter in Chinese mythology
- I, a character in the comic book series Adventure into Fear
Vehicles
- Italy (I), in the list of international license plate codes
- Italy (aircraft registration prefix)
- Mitsubishi i, a Japanese kei car
Other uses
- I-Foundation, a Hindu and ISKCON charity in charge of state-funded Hindu faith schools in the United Kingdom
- Interest rate (i), in economics
- Investment (I), in economics