PP abbreviation 1. parcel post 2. parish priest 3. part paid 4. parts per 5. past participle 6. peak to peak 7. pellagra preventive 8.often not capitalized[Latin per procurationem] by proxy or by the agency of 9. personal property 10. picked ports 11.[Italian più piano] more softly 12. postpaid 13. pounds pressure 14. power plant 15. prepaid 16. privately printed 17.[Latin punctum proximum] near point