1. reducing diet a diet designed to help you lose weight (especially fat)
  2. production cost combined costs of raw material and labor incurred in producing goods
  3. reducing agent a substance capable of bringing about the reduction of another substance as it itself is oxidized; used in photography to lessen the density of a negative or print by oxidizing some of the loose silver
  4. protoctist any of the unicellular protists
  5. productivity the quality of yielding positive results
  6. personality test any test that is intended to assess personality
  7. Protoctista in most modern classifications, replacement for the Protista
  8. producer gas a gas made of carbon monoxide and hydrogen and nitrogen
  9. processing time the time it takes to complete a prescribed procedure
  10. preclinical test a laboratory test of a new drug or a new invasive medical device on animal subjects; conducted to gather evidence justifying a clinical trial
  11. projective test any personality test designed to yield information about someone's personality on the basis of their unrestricted response to ambiguous objects or situations
  12. paternity test a test based on blood groups to determine whether a particular man could be the biological father of a particular child; negative results prove he was not the father but positive results show only that he could be
  13. pregnancy test a physiological test to determine whether a woman is pregnant
  14. medicine chest cabinet that holds medicines and toiletries
  15. pricing system a system for setting prices on goods or services
  16. Proteus anguinus European aquatic salamander with permanent external gills that lives in caves
  17. Friedman test pregnancy test that involves injecting some of the woman's urine into an unmated female rabbit and later examining the ovaries of the rabbit; presence of corpora lutea indicates that the woman is pregnant
  18. writing desk a desk for writing (usually with a sloping top)
  19. reading desk desk or stand with a slanted top used to hold a text at the proper height for a lecturer
  20. bird's nest nest where birds lay their eggs and hatch their young