| 释义 |
- Language
- Science, technology, and mathematics Biology Chemistry Computing Mathematics Physics and astronomy Telecommunication Other uses in technology
- Arts and media Music Albums Songs Other media
- Mythology
- Vehicles
- Other uses
- See also
{{wiktionary|I|i|i-|-i}}I is the ninth letter of the Latin alphabet. I or i may also refer to: {{TOC right}}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
- I, male prefix to some Balinese names
Science, technology, and mathematics{{for|vehicles|#Vehicles}}Biology- Haplogroup I (mtDNA), a human mitochondrial DNA (mtDNA) haplogroup
- Haplogroup I (Y-DNA), a Y-chromosomal DNA (Y-DNA) haplogroup
- Olfactory nerve, the 1st cranial nerve in human anatomy
Chemistry- Iodine (symbol I), a chemical element
- Isoleucine (I), an amino acid
- Ionic strength (I), in a chemical solution
- Van 't Hoff factor ({{mvar|i}})
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
Mathematics- 1 (number) (Roman numeral: I)
- Imaginary unit ({{mvar|i}}), for which {{math|1=i2 = −1}}
- Identity matrix ({{mvar|I}} or {{math|In}}), of indeterminate size (or of size {{mvar|n}})
- Unit interval ({{mvar|I}}), which contains all real numbers from 0 to 1 inclusive
- {{mvar|i}}, an index variable in a matrix
- {{math|Ix(a,b)}}, the regularized incomplete beta function (of a variable {{mvar|x}} and parameters {{math|a,b}})
- {{mvar|î}}, the unit vector along the x-axis in Cartesian coordinates
- {{mvar|i}}, the index of summation, used to calculate a sum
Physics and astronomy- Electric current ({{mvar|I}}, {{mvar|i}})
- Moment of inertia ({{mvar|I}})
- Luminous intensity ({{mvar|I}})
- Orbital inclination ({{mvar|i}})
- I (one), in the Yerkes spectral classification scheme, the symbol for supergiants
Telecommunication- I band (NATO), 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
Other uses in technology- i, a suffix unit for video resolution (vertical Interlaced lines), as in 480i or 1080i
- I, in the YIQ colorspace commonly used with the NTSC television encoding scheme, the color-difference channel which is in-phase with the subcarrier
Arts and mediaMusic- I (band), a Norwegian heavy metal band
- I, a diatonic function in tonal music theory
Albums- i (A.R. Kane album), 1989
- I (Ben Lester album), 2019
- I (Cilvaringz album), 2007
- I (Cursed album), 2003
- I (Die Krupps album), 1992
- I (Felix Jaehn album), 2018
- I (Ikimono-gakari album), 2013
- I (Jaejoong EP), 2013
- I (JonnyX and the Groadies album), 2005
- I (Juju album), 2018
- I (Kingston Wall album), 1992
- I (Kurt Nilsen album), 2003
- i (The Magnetic Fields album), 2004
- I (Meshuggah EP), 2004
- i (Misako Odani album), 1997
- I (Nightingale album), 2000
- I (Sahg album), 2006
- I (Taeyeon EP), 2015
- I (Xerath album), 2009
- I (soundtrack), by A. R. Rahman from the eponymous 2015 film
Songs- "i" (Kendrick Lamar song), 2014
- "I" (Taproot song), 2001
- "I (Who Have Nothing)", a 1966 Ben. E. King song also recorded by Tom Jones, who used the title for one of his albums
- "I", a 2003 song on Weather Systems, an album by Andrew Bird
- "I", a 1992 song on Selected Ambient Works 85–92, an album by Aphex Twin
- "I", a 1992 song on Dehumanizer, an album by Black Sabbath
- "I", a 1997 song on Coal Chamber, an album by Coal Chamber
- "I", a 1967 song on Underground, an album by The Electric Prunes
- "I", a 2012 song on Muse, an album by Jolin Tsai
- "I", a 1981 song on Music from "The Elder", an album by Kiss
- "I", a 1999 song on Eternal, an album by Samael
- "I", a 2003 song on Winter Story, an album by Shinhwa
- "I", a 2015 song on I, an EP by Taeyeon
- "I", a 2016 song by Rezz
Other media- I (film), a 2015 Indian Tamil-language film
- i (TV network), the former name of ION Television
- i (newspaper), a British newspaper based in London
- i (Portuguese newspaper), a Portuguese newspaper based in Lisbon
- I, a character in the comic book series Adventure into Fear
- "I" Is for Innocent, the ninth novel in Sue Grafton's "Alphabet mystery" series, published in 1992
- I, a Man, a 1967 Andy Warhol film
Mythology- Goddess I, a Mayan deity
- Hou-i, or I, a heroic archer and hunter in Chinese mythology
Vehicles- Italy (I), in the list of international vehicle registration codes
- Italy (aircraft registration prefix)
- Mitsubishi i, a Japanese kei car
Other uses- i, an international symbol for visitor or tourist information; see ISO 7001
- I-Foundation, a charity in charge of state-funded Hindu faith schools in the United Kingdom
- Interest rate (i), in economics
- Investment (I), in economics
- India, the military time zone code for UTC+09:00
See also- 1 (disambiguation)
- Eye (disambiguation)
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