1. sensory system the body's system of sense organs
  2. binary system a positional system of numeration that uses binary digits and a radix of two
  3. sewer system facility consisting of a system of sewers for carrying off liquid and solid sewage
  4. honor system a system of conduct in which participants are trusted not to take unfair advantage of others
  5. tense system a system of tenses used in a particular language
  6. solar system the sun with the celestial bodies that revolve around it
  7. lens system a transparent optical device used to converge or diverge transmitted light and to form images
  8. monetary system anything that is generally accepted as a standard of value and a measure of wealth in a particular country or region
  9. somatosensory system the faculty of bodily perception
  10. speaker system electro-acoustic transducer that converts electrical signals into sounds loud enough to be heard at a distance
  11. stereo system reproducer in which two microphones feed two or more loudspeakers to give a three-dimensional effect to the sound
  12. software system (computer science) written programs or procedures or rules and associated documentation pertaining to the operation of a computer system and that are stored in read/write memory
  13. social system the people in a society considered as a system organized by a characteristic pattern of relationships
  14. suspension system a mechanical system of springs or shock absorbers connecting the wheels and axles to the chassis of a wheeled vehicle
  15. number system any notation for the representation of numbers
  16. support system a network of facilities and people who interact and remain in informal communication for mutual assistance; a network that enables you to live in a certain style
  17. sound system a system of electronic equipment for recording or reproducing sound
  18. control system a system for controlling the operation of another system
  19. ecosystem organisms interacting with their physical environment
  20. servosystem control system that converts a small mechanical motion into one requiring much greater power; may include a negative feedback system