1. dictionary a reference book containing an alphabetical list of words
  2. eccentric conspicuously or grossly unconventional or unusual
  3. reduction gear gearing that reduces an input speed to a slower output speed
  4. reaction turbine a turbine with blades arranged to develop torque from gradual decrease of steam pressure from inlet to exhaust
  5. reductionist of a theory explaining complex things by simpler elements
  6. production order an order that initiates the manufacturing process
  7. dead on target accurately placed or thrown
  8. reduction division (genetics) cell division that produces reproductive cells in sexually reproducing organisms; the nucleus divides into four nuclei each containing half the chromosome number (leading to gametes in animals and spores in plants)
  9. production cost combined costs of raw material and labor incurred in producing goods
  10. Education Secretary the person who holds the secretaryship of the Department of Education
  11. radiation therapy (medicine) the treatment of disease (especially cancer) by exposure to a radioactive substance
  12. radar target a radar echo displayed so as to show the position of a reflecting surface
  13. reaction time the time that elapses between a stimulus and the response to it
  14. contract a binding agreement that is enforceable by law
  15. conduction deafness hearing loss due to problems with the bones of the middle ear
  16. rhinotracheitis a respiratory infection of the nose and throat in cattle
  17. dictionary entry the entry in a dictionary of information about a word
  18. reduction the act of decreasing something
  19. reductionism a theory that all complex systems can be completely understood in terms of their components
  20. decoction process (brewing) a process in which part of the mash is removed and boiled and then returned