pi

noun5

1. •
   The sixteenth letter of the Classical and Modern Greek alphabets and the seventeenth in Old Greek.
2. •
   An irrational and transcendental constant representing the ratio of the circumference of a Euclidean circle to its diameter; approximately 3.14159265.
3. •
   Metal type that has been spilled, mixed together, or disordered.
4. •
   pica (conventionally, 12 points = 1 pica, 6 picas = 1 inch).
5. •
   Piaster.

adjective2

1. •
   Pious.

   • “Those are very 'pi' sentiments. Was a preacher in Staffordshire— I was raised chapel, though've tried to forget it—he talked that way... redemption and the lot.” — 1972
2. •
   Not part of the usual font character set; especially, non-Roman type or symbols as opposed to standard alphanumeric Roman type.

   • In computing, pi characters may be entered with special key combinations.

verb1

1. •
   To spill or mix printing type.

adjective1

1. •
   Initialism of politically incorrect (see PC).

noun20

1. •
   Initialism of private investigator.
2. •
   Initialism of personal injury.
3. •
   Initialism of principal investigator (“lead researcher on a grant-funded project”).
4. •
   Initialism of protease inhibitor.
5. •
   Abbreviation of Piauí: a state of Brazil.
6. •
   Initialism of preliminary injunction.
7. •
   Initialism of processing instruction.
8. •
   Initialism of parallel import.
9. •
   Abbreviation of phosphatidylinositol, a phospholipid component of eukaryotic cell membranes, also abbreviated in PtdIns.
10. •
    Initialism of polyimide.
11. •
    Initialism of pro forma invoice.
12. •
    Initialism of power integrity.
13. •
    Initialism of ponderal index.
14. •
    Initialism of port injection (“fuel injection”).
15. •
    (Philippines) Initialism of people's initiative.
16. •
    Initialism of partial induction (see AI).
17. •
    Abbreviation of prohibited immigrant.
18. •
    Initialism of paradoxical intention.
19. •
    Initialism of penile inversion.
20. •
    (slang) Initialism of pseudoincest.