“Historical kana orthography” in Japanese
Short answer
Historical kana orthography in Japanese is “歴史的仮名遣い” (rekishitekikanazukai). Full meaning: historical kana orthography (used before 1946 reform), old kana orthography.
Other ways to say “Historical kana orthography” in Japanese
旧仮名
kyuukana old kana orthography (used before 1946 reform), historical kana orthography
旧仮名遣い
kyuukanazukai old kana orthography (used before 1946 reform), historical kana orthography
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