alternative written form; variant spelling
A technical term used in lexicography and linguistics to refer to a different way of writing the same word, such as a kanji variant or alternative kana usage.
辞書では「異表記」として別の漢字表記が示されることがある。
In dictionaries, alternative kanji spellings are sometimes shown as 'variant written forms'.
Compound of 異 (i, 'different') + 表記 (hyōki, 'notation, written representation').