1. threshold the starting point for a new state or experience
  2. Churchill Downs a racetrack for thoroughbred racing in Louisville
  3. threshold level the intensity level that is just barely perceptible
  4. differential diagnosis a systematic method of diagnosing a disorder (e.g., headache) that lacks unique symptoms or signs
  5. sialadenitis inflammation of the salivary glands
  6. water-shield family in some classifications considered an independent family of water lilies; comprises the genera Cabomba and Brasenia
  7. threshold gate a logic element that performs a threshold operation
  8. threshold function a function that takes the value 1 if a specified function of the arguments exceeds a given threshold and 0 otherwise
  9. Trochilidae hummingbirds
  10. partial denture a denture replacing one or more teeth in a dental arch
  11. threshold element a logic element that performs a threshold operation
  12. tracheal vein several small veins from the trachea
  13. Tricholoma venenata a poisonous white agaric
  14. threshold operation an operation performed on operands in order to obtain the value of a threshold function
  15. Tricholomataceae a family of fungi belonging to the order Agaricales
  16. shielding the act of shielding from harm
  17. partial tone a harmonic with a frequency that is a multiple of the fundamental frequency
  18. slightness smallness of stature
  19. unwieldiness the quality of being difficult to direct or control by reason of complexity
  20. overshielding excessive protection