Last Updated
：2025/11/20
Noun
abbreviation
alt-of
countable
initialism
uncountable
Japanese Meaning
ポータブル・ドキュメント・フォーマット：PDF形式の文書を指す / 確率密度関数：pdfの別表記として用いられる / 人々の防衛軍：people's defence forceの略
Sense（2）
Sense（3）
（ plural ）
Quizzes for review
Initialism of Portable Document Format. A document in PDF format. / Alternative letter-case form of pdf (“probability density function”) / Abbreviation of people's defence force.
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See correct answer
I saved the contract as a PDF and emailed it to the client.
See correct answer
I saved the contract as a PDF and emailed it to the client.
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