る, in hiragana, or ル in katakana, is one of the Japanese kana, each of which represent one mora. The hiragana is written in one stroke; the katakana in two. Both represent the sound [ɾɯ]ⓘ. The Ainu language uses a small katakana ㇽ to represent a final r sound after an u sound (ウㇽ ur). The combination of an R-column kana letter with handakuten ゜- る゚ in hiragana, and ル゚ in katakana was introduced to represent [lu] in the early 20th century.[according to whom?]
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