pdf

noun1

1. •
   Initialism of probability density function.

verb1

1. •
   To convert (something) to PDF format.

noun3

1. •
   Initialism of Portable Document Format, a standard for representing electronic documents, allowing them to be transmitted and reproduced accurately with the same printed layout.
2. •
   Initialism of portable document format (“a document in PDF format”).

   • The reMarkable PDF reader is really targeted at the digital writing market, rather than the digital reading market, though most serious e-readers support pens for annotations and signatures. — 2019
3. •
   Initialism of pop directional format.