1. decimal system a positional system of numeration that uses decimal digits and a base of ten
  2. digestive system the system that makes food absorbable into the body
  3. defense system the weaponry available for the defense of a region
  4. defence system the weaponry available for the defense of a region
  5. drive line system mechanism that transmits power from the engine to the driving wheels of a motor vehicle
  6. telephone system a communication system that transmits sound between distant points
  7. tonal system the system of tones used in a particular language or dialect of a tone language
  8. sensory system the body's system of sense organs
  9. solar system the sun with the celestial bodies that revolve around it
  10. vestibular system organs mediating the labyrinthine sense
  11. drainage system a system of watercourses or drains for carrying off excess water
  12. receiving system set that receives radio or tv signals
  13. school system establishment including the plant and equipment for providing education from kindergarten through high school
  14. tense system a system of tenses used in a particular language
  15. spoils system the system of employing and promoting civil servants who are friends and supporters of the group in power
  16. servosystem control system that converts a small mechanical motion into one requiring much greater power; may include a negative feedback system
  17. disenfranchised deprived of the rights of citizenship, as the right to vote
  18. vascular system the vessels and tissue that carry or circulate fluids such as blood or lymph or sap through the body of an animal or plant
  19. twelve-tone system a type of serial music introduced by Arnold Schoenberg
  20. television system a telecommunication system that transmits images of objects (stationary or moving) between distant points

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