noun
redundancy in a text; superfluous passage
Technical term in textual criticism and philology for an inadvertent repetition or insertion of words in a manuscript or printed text.
この写本には衍文が多く見られる。
Many redundancies can be seen in this manuscript.
校訂者は衍文を削除して本文を復元した。
The editor removed the superfluous passages and restored the original text.