also: ひぶん
noun
password; secret phrase; secret spell
Refers to a secret word or phrase used for authentication, magic, or hidden knowledge. Often used in historical, fantasy, or technical contexts.
この扉を開けるには秘文が必要だ。
You need the secret phrase to open this door.
彼は古代の秘文を唱えて魔法を使った。
He chanted the ancient secret spell and used magic.
Compound of 秘 (secret) and 文 (writing, phrase). The exact historical derivation is uncertain, but the word is conventionally associated with hidden or magical texts.