1. Persian Empire an empire in southern Asia created by Cyrus the Great in the 6th century BC and destroyed by Alexander the Great in the 4th century BC
  2. personal computer a small digital computer based on a microprocessor and designed to be used by one person at a time
  3. prison camp a camp for prisoners of war
  4. presence chamber room in which a monarch or other great person receives guests, assemblies, etc.
  5. boron chamber an ionization chamber lined with boron or filled with boron trifluoride gas for counting low velocity neutrons
  6. personal manner a way of acting or behaving
  7. personal memory memory for episodes in your own life
  8. personal care care for someone who is disabled or is otherwise unable to care for themselves; can including bathing and cooking and managing bodily functions
  9. person hour a time unit used in industry for measuring work
  10. piston chamber a chamber within which piston moves
  11. Persian Gulf War a war fought between Iraq and a coalition led by the United States that freed Kuwait from Iraqi invaders; 1990-1991
  12. poison camas a common perennial death camas; Tennessee to Kansas to Texas
  13. person of colour (formal) any non-European non-white person
  14. person agreement agreement in person between pronouns and verbs
  15. personal matters matters of personal concern
  16. person of color (formal) any non-European non-white person
  17. prison chaplain a chaplain in a prison
  18. personage a person whose actions and opinions strongly influence the course of events
  19. personnel carrier a military vehicle (usually armored) for transporting military personnel and their equipment
  20. persona grata a diplomat who is acceptable to the government to which he is sent

Sign up, it's free!

Whether you're a student, an educator, or a lifelong learner, Vocabulary.com can put you on the path to systematic vocabulary improvement.