1. precise sharply exact or accurate or delimited
  2. processor someone who processes things
  3. capricious determined by chance or impulse rather than by necessity
  4. precision the quality of being exact
  5. precious of high worth or cost
  6. precis a sketchy summary of the main points of an argument
  7. precisely in a sharply exact manner
  8. premise a statement that is held to be true
  9. pressure the act of putting pressure on something
  10. precess move in a gyrating fashion
  11. precursor something indicating the approach of something or someone
  12. pressor increasing (or tending to increase) blood pressure
  13. persist refuse to stop
  14. preciosity the quality of being fastidious or excessively refined
  15. racism the prejudice that one people are superior to another
  16. procedure a particular course of action intended to achieve a result
  17. plesiosaur extinct marine reptile with a small head on a long neck a short tail and four paddle-shaped limbs; of the Jurassic and Cretaceous
  18. preciously extremely
  19. price war intense competition in which competitors cut retail prices to gain business
  20. precarious not secure; beset with difficulties