pp

noun4

1. •
   proton and proton (used attributively to describe a collision or other interaction of these two particles)

   • Comparisons with ppbar and pp data reveal improvement in the description of single diffractive events. — 2015
2. •
   [plural only] Abbreviation of pages (plural of p).
3. •
   Initialism of past participle.
4. •
   Initialism of percentage point.

adverb1

1. •
   Initialism of per person.

noun2

1. •
   Abbreviation of pages (plural of p.)
2. •
   Abbreviation of past participle.

phrase1

1. •
   Abbreviation of per procurationem.

noun15

1. •
   Initialism of past participle.
2. •
   Initialism of prepositional phrase.
3. •
   Initialism of polypropylene.
4. •
   Initialism of power play.
5. •
   (UK, Ireland) Initialism of planning permission.
6. •
   Abbreviation of performance points.
7. •
   (India, Singapore) Initialism of public prosecutor.
8. •
   Initialism of parish priest.

   • Bequests also: to the P. P. for the time being in his absolute discretion. — 1922
9. •
   (Internet, informal) Initialism of pee-pee (“penis or vagina”).
10. •
    Initialism of precocious puberty.
11. •
    Abbreviation of prone positioning (“proning”).
12. •
    Initialism of public parking.
13. •
    Initialism of postpositional phrase.
14. •
    (Internet) Initialism of pussy pass.
15. •
    Initialism of promenade position.

phrase1

1. •
   Initialism of play or pay.