i

See also: I and Appendix:Variations of "i"

i U+0069, i LATIN SMALL LETTER I ← h [U+0068] Basic Latin j → [U+006A]

Character variations

ⁱ U+2071, ⁱ SUPERSCRIPT LATIN SMALL LETTER I [unassigned: U+2072–U+2073] ← ⁰ [U+2070] Superscripts and Subscripts ⁴ → [U+2074]

ⅰ U+2170, ⅰ SMALL ROMAN NUMERAL ONE ← Ⅿ [U+216F] Number Forms ⅱ → [U+2171]

ｉ U+FF49, ｉ FULLWIDTH LATIN SMALL LETTER I ← ｈ [U+FF48] Halfwidth and Fullwidth Forms ｊ → [U+FF4A]

Languages (178)

Translingual • English

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The entries for i are spread across multiple pages due to their length.

Translingual

Etymology 1

Lower case variation of upper case I, from Ancient Greek letter Ι (I, “Iota”).

Letter

i (lower case, upper case I)

1. The ninth letter of the basic modern Latin alphabet.

Letter

i (upper case İ)

1. In the Turkish alphabet and its descendants, the lower-case form of dotted capital İ, which contrasts with ı as the lower-case form of dotless capital I.

See also

• (Latin script):  Aa  Bb  Cc  Dd  Ee  Ff  Gg  Hh  Ii  Jj  Kk  Ll  Mm  Nn  Oo  Pp  Qq  Rr  Sſs  Tt  Uu  Vv  Ww  Xx  Yy  Zz
• (Variations of letter I):  Íí  Ìì  Ĭĭ  Îî  Ǐǐ  Ïï  Ḯḯ  Ĩĩ  Įį  Īī  Ỉỉ  Ȉȉ  Ȋȋ  Ịị  Ḭḭ  Ɨɨɨ̆  ᵻ  ᶖ   İi   Iı  Ɪɪ  Ｉｉ  fi  ffi  IJij  IJij
• (Letters with dot):  Ȧȧ  Ạạ  Ặặ  Ậậ  Ǡǡ  Ḃḃ  Ḅḅ  Ċċ  Ḋḋ  Ḍḍ  Ėė  Ẹẹ  Ḟḟ  Ġġ  Ḣḣ  Ḥḥ  Ii  İi  Iı  Ịị  Ḳḳ  Ḷḷ  Ṁṁ  Ṃṃ  Ṅṅ  Ṇṇ  Ȯȯ  Ọọ  Ợợ  Ṗṗ  Ṙṙ  Ṛṛ  Ṡṡ  Ṣṣ  ẛ  Ṫṫ  Ṭṭ  Ụụ  Ựự  Ṿṿ  Ẇẇ  Ẉẉ  Ẋẋ  Ẏẏ  Ỵỵ  Żż  Ẓẓ

Derived symbols

• j
• ɨ — IPA
• İ and ı — Turkish

Similar and related symbols

• Ι and ι — Greek
• І and і — Cyrillic I, used in Belarusian and Ukrainian
• Ӏ and ӏ — Cyrillic palochka, used in the Caucasian languages
• ا — Arabic (alif)
• 1 — Arabic numeral
• Ꭵ — Cherokee (IPA: ə̃)
• ᛁ — Runic
• ɪ — IPA

Etymology 2

• (mathematics, imaginary number): Abbreviation of English imaginary.
• (engineering, electric current): Abbreviation of French intensité du courant; first used by M. André-Marie Ampère.
• (computer programming, generic index): Abbreviation of English index.
• (linguistics): Abbreviation of English identity.

Pronunciation

• Pronunciation of IPA [iː]:

  (file)

Symbol

i

1. (mathematics, often in italics or bold) The imaginary unit; a fixed square root of -1. Graphically, $i$ is shown on the vertical (y-axis) plane.

   Synonym: j

   a+bi with a is real part and b is imaginary part

2. (mathematics, often in bold) The unit vector in the x direction.

   Coordinate terms: j, k

3. (engineering, often in bold) The current flow in an electric circuit, frequently measured in amperes.

   v=ir (Ohm's Law)

4. (mathematics, programming) A common variable name representing a generic index, especially in loops.

   Synonym: j

6. January.

   Comeronyms: II, ii, 2; III, iii, 3; IV, iv, 4; V, v, 5; VI, vi, 6; VII, vii, 7; VIII, viii, 8; IX, ix, 9; X, x, 10; XI, xi, 11; XII, xii, 12

7. (IPA, romanization) a close front unrounded vowel.
8. (superscript ⟨ⁱ⟩, IPA) [i]-coloring, an [i] on-glide or off-glide (a diphthong), or a weak, fleeting, epenthetic or echo [i].
9. (international standards) transliterates Indic इ (or equivalent).
10. (financial mathematics) annual effective interest rate
11. (subscript, linguistics) indicates that two items are identical or coreferential (refer to the same thing). E.g. CV_iCV_i means a sequence of consonant-vowel-consonant-vowel, where the two V's are the same vowel; Sally_i ... she_i means that 'she' refers to 'Sally'. A second identity may be indicated with j.

Etymology 3

Lower case form of upper case Roman numeral I, apparently derived from the shape of a notch scored across a tally stick.

Alternative forms

• I, Ⅰ, ⅰ

Numeral

i (lower case Roman numeral, upper case I)

1. cardinal number one
2. (music) minor tonic triad

See also

• Next: ii (2)
• Roman numerals

Gallery

• Letter styles
• 
  Uppercase and lowercase versions of I, in normal and italic type
• 
  Uppercase and lowercase I in Fraktur

See also

Other representations of I:

NATO phonetic: India Morse code: ·· Braille: ⠊ ASL Manual: I

Signal flag:

Semaphore:

English

Etymology 1

From Latin i, minuscule of I.

Pronunciation

• (phoneme): IPA^(key): /ə/, /aɪ/, /ɪ/, /i/, /iː/
• (letter name): enPR: ī, IPA^(key): /aɪ/

• Audio (US):

  (file)

• Rhymes: -aɪ
• Homophones: aye, eye

Letter

i (lower case, upper case I, plural is or i's)

1. The ninth letter of the English alphabet, called i and written in the Latin script.

Usage notes

The English letter i represents many different sounds, often the diphthong /aɪ/ (from Middle English /iː/), as in the pronoun I, or /ɪ/ as in bit. In borrowings, it may represent /iː/ as well.

See also

• (Latin script letters) letter; Aa, Bb, Cc, Dd, Ee, Ff, Gg, Hh, Ii, Jj, Kk, Ll, Mm, Nn, Oo, Pp, Qq, Rr, Ss, Tt, Uu, Vv, Ww, Xx, Yy, Zz

Number

i (lower case, upper case I, plural is or i's)

1. The ninth numeral symbol of the English alphabet, called i and written in the Latin script.

Noun

i (plural ies)

1. The name of the Latin script letter I/i.
   • the position of an i-dot (the dot of an i)
   • i-mutation, i-umlaut

Alternative forms

• eye

Translations

name of the letter I, i

• Arabic: أَي (ar) m (ʔay) (English), إِي (ar) m (ʔī)
• Asturian: i (ast)
• Bengali: আই (bn) (ai)
• Bulgarian: и (bg) n (i)
• Burmese: အိုင် (my) (uing)
• Catalan: i (ca) f
• Chinese:

  Mandarin: (English letter names are called as in English, no other standard Mandarin name exists)

• Esperanto: i (eo)
• Finnish: ii (fi)
• Galician: i (gl) m, i latino m
• German: I (de) n
• Greek: άι (el) (ái)
• Hawaiian: ʻī
• Hindi: आई (hi) (āī)
• Ido: i (io)
• Irish: í, idad, iodhadh
• Japanese: アイ (ja) (ai) (English), 牛の角文字 (ja) (ushi no tsunomoji) (dated)
• Korean: 아이 (ko) (ai)
• Latin: ī (la)
• Malay: ai (ms)
• Marathi: आय (āy)
• Occitan: i (oc) f
• Persian: آی (fa) (ây)
• Portuguese: i (pt) m
• Romanian: i (ro)
• Russian: ай (ru) n (aj) (English), и (ru) n (i)
• Spanish: i (es) f, i latina (es) f
• Thai: ไอ (th) (ai)
• Turkish: i (tr)
• Vietnamese: i (vi), i ngắn (vi)
• Welsh: i f, i dot f, i ddot f

Derived terms

• barred i
• dot the i's and cross the t's
• i-adjective
• i-breve
• i-dotter
• i-dotting
• i-mutation
• i-risk
• i-stem
• ith
• i-umlaut
• i-word
• long i
• short i

See also

• (Latin-script letter names) letter; a, bee, cee, dee, e, ef, gee, aitch, i, jay, kay, el, em, en, o, pee, cue, ar, ess, tee, u, vee, double-u, ex, wye, zee/zed ^{(Category: en:Latin letter names)}

Etymology 2

From Old English iċ.

Pronunciation

• IPA^(key): /aɪ/
• Rhymes: -aɪ
• Homophones: aye, eye

Pronoun

i

1. (nonstandard) Alternative letter-case form of I.
   • 1762, Benj[amin] Stillingfleet, Miscellaneous Tracts Relating to Natural History, Husbandry, and Physick. To Which Is Added the Calendar of Flora., 2nd edition, London: […] R. and J. Dodsley, […]; S. Baker, […]; and T. Payne, […], pages 30 and 32:

     Here follow ſome few lines in the original, which not underſtanding i have omitted. […] Laſtly that amidſt ſo many viciſſitudes of fortune, to which I have been expoſed, amongſt all the goods, i ſay, and evils, the joyfull and gloomy, the pleaſing, and diſagreeable circumſtances of life, thou endowedſt me with an equal, conſtant, manly, and ſuperior ſpirit on every occaſion.

   • 2021 January 26, Travis M. Andrews, “‘When covid is over’ sounds like ‘when I meet Harry Styles’: The new pandemic meme, explained”, in The Washington Post‎^[1], archived from the original on 27 January 2021:

     As YouTuber Alex Elmslie tweeted, “ ‘once COVID is over’ is starting to sound a lot like ‘when i fix my sleep schedule.’ ”

Usage notes

• Also used in instant messaging due to limitations of entering capitals on a mobile phone's keypad.
• Sometimes to indicate informality, primarily in typed media

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