1. transmission system the gears that transmit power from an automobile engine via the driveshaft to the live axle
  2. transit instrument a telescope mounted on an axis running east and west and used to time the transit of a celestial body across the meridian
  3. transmission time the coordinated universal time when a transmission is sent from Earth to a spacecraft or other celestial body
  4. transmission density (physics) a measure of the extent to which a substance transmits light or other electromagnetic radiation
  5. transmission shaft rotating shaft that transmits rotary motion from the engine to the differential
  6. transmission channel a path over which electrical signals can pass
  7. transmission line a conductor for transmitting electrical or optical signals or electric power
  8. percussion instrument a musical instrument in which the sound is produced by one object striking another
  9. transfusion reaction reaction of the body to a transfusion of blood that is not compatible with its own blood; an adverse reaction can range from fever and hives to renal failure and shock and death
  10. disconcertment anxious embarrassment
  11. transcendent exceeding or surpassing usual limits
  12. transient lasting a very short time
  13. transmission mechanism any mechanism whereby an infectious agent is spread from a reservoir to a human being
  14. transuranic element any element having an atomic number greater than 92
  15. transparent able to be seen through with clarity
  16. transmission communication by means of sent signals
  17. transactional immunity a broader form of use immunity that also protects the witness from any prosecution brought about relating to transactions to which they gave testimony
  18. transmission control protocol a protocol developed for the internet to get data from one network device to another
  19. Treasury Department the federal department that collects revenue and administers federal finances; the Treasury Department was created in 1789
  20. transfer payment a public expenditure that is not for goods and services