PP can stand for different things depending on the context. Here are some possible meanings:

• Pages: In the context of a book or document, PP can be an abbreviation for "pages". For example, "see pp 56-58" means "see pages 56 to 58".
• Per person: PP can also stand for "per person". For example, "the tickets are $55 pp" means "the tickets cost $55 per person".
• Postpaid: PP can be an abbreviation for "postpaid", which means that the postage or shipping costs have already been paid.
• Prepaid: PP can also stand for "prepaid", which means that the postage or shipping costs have been paid in advance.
• Privately printed: In the context of books, PP can be an abbreviation for "privately printed".
• By proxy: In British English, PP can be used before a persons name on a document to show that the signature is not of that person but of a person who has signed the document with the other persons permission.
• Pianissimo: In music notation, PP is an abbreviation for "pianissimo", which means "very softly".

Its important to note that the meaning of PP can vary depending on the context, and its always best to check the specific context to determine the correct meaning.