T

   1. informal abbreviation for "trillion," meaning the American trillion 10¹².

   2. symbol for the Dvorak T-number, a subjective estimate of the strength of a tropical cyclone based on its appearance in satellite imagery. The T-numbers range from T1.0 to T8.0 in steps of 0.5; ratings above T2.5 indicate a tropical storm and ratings above T4.0 indicate a hurricane or typhoon. The scale was developed by the U.S. meteorologist Vernon Dvorak in 1974. Wikipedia has details.

   3. the symbol for the tesla.

   4. see ton¹

   5. see talbot

   6. see tablespoon