1. P3 - Noun
2. P3 - Proper noun
(business) public-private partnership
(chemistry) period 3
Abbreviation of priority three. A level of low importance or priority
Coordinate terms: P0, P1, P2, P4, P5
(computing) Intel Pentium III
(computing, dated) Intel 80386, 386 family
(military, aviation, US) Misspelling of P-3.
Source: en.wiktionary.org