I (kana) explained

Hiragana Image:Japanese Hiragana kyokashotai I.svg
Katakana Image:Japanese Katakana kyokashotai I.svg
Transliteration:i
Hiragana Manyogana:
Katakana Manyogana:
Other Manyogana:伊 怡 以 異 已 移 射 五
Spelling:いろはのイ
(Iroha no "i")

I ( in hiragana or in katakana) is one of the Japanese kana each of which represents one mora. い is based on the sōsho style of the kanji character 以, and イ is from the radical (left part) of the kanji character 伊. In the modern Japanese system of sound order, it occupies the second position of the mora chart, between and . Additionally, it is the first letter in Iroha, before ろ. Both represent the sound pronounced as /[i]/. In the Ainu language, katakana イ is written as y in their Latin-based mora chart, and a small ィ after another katakana represents a diphthong.

FormRōmajiHiraganaKatakana
Normal a/i/u/e/o
(あ行 a-gyō)
i
ii, yi
ī
いい, いぃ
いー
イイ, イィ
イー

Variant forms

Like other vowels, scaled-down versions of the kana (ぃ, ィ) are used to express sounds foreign to the Japanese language, such as フィ (fi). In some Okinawan writing systems, a small ぃ is also combined with the kana く (ku) and ふ to form the digraphs くぃ kwi and ふぃ hwi respectively, although the Ryukyu University system uses the kana ゐ/ヰ instead.

Origin

い comes from the left part of the Kanji 以, while イ originates from the left part of the Kanji 伊.[1] An alternate form -, based on the full cursive form of 以 is one of the most common hentaigana, as it merged with い late in the development of modern Japanese writing.

Stroke order

The Hiragana い is made in two strokes:

  1. At the top left, a curved vertical stroke, ending with a hook at the bottom.
  2. At the top right, a shorter stroke, slightly curving in the opposite direction.

The Katakana イ is made in two strokes:

  1. At the top, a curved diagonal line going from right to left.
  2. In the center of the last stroke, a vertical line going down.

Other communicative representations

When lengthening "-i" or "-e" morae in Japanese braille, a chōon is always used, as is standard in katakana orthography, instead of adding the い / イ kana.

Footnotes

  1. http://www.nihongoresources.com/language/writing/kana.html Where do the kana come from