TT

WordReference Random House Unabridged Dictionary of American English © 2025

TT, 

1. Trust Territories (approved esp. for use with zip code).

Collins Concise English Dictionary © HarperCollins Publishers::

TT abbreviation

1. teetotal
2. teetotaller
3. telegraphic transfer: a method of sending money abroad by cabled transfer between banks
4. Tourist Trophy (annual motorcycle races held in the Isle of Man)
5. tuberculin-tested

WordReference Random House Learner's Dictionary of American English © 2025

T, t /ti/   n. [countable] , pl. Ts or T's, ts or t's. 

1. Linguistics the 20th letter of the English alphabet, a consonant.

Idioms

2. Idioms to a T or tee, exactly;
   perfectly:
   That description of the thug fits him to a T.

't, 

1. a shortened form of it, before or after a verb, as in
   'twas, 'tis.

T.,  an abbreviation of:

1. tablespoon.
2. Tuesday.

t.,  an abbreviation of:

1. teaspoon;
   teaspoonful.
2. Physics temperature.
3. time.
4. Weights and Measures ton.
5. Grammar transitive.

WordReference Random House Unabridged Dictionary of American English © 2025

T, t  (tē), n., pl. T's or Ts, t's or ts. 

1. Linguistics the 20th letter of the English alphabet, a consonant.
2. Linguistics any spoken sound represented by the letter T or t, as in tub, but, or butter.
3. something having the shape of aT.
4. a written or printed representation of the letter T ort. 
5. a device, as a printer's type, for reproducing the letter T ort. 
6. to a T, exactly;
   perfectly:
   That job would suit you to a T.

Also, to a tee. 
T  (tē), n. (sometimes l.c.)

1. Clothing T-shirt.

T, 

1. tera-.
2. Electricity tesla;
   teslas.
3. Physics temperature.

T, Symbol.

1. the 20th in order or in a series, or, when I is omitted, the 19th.
2. (sometimes l.c.) the medieval Roman numeral for 160. Cf. Roman numerals. 
3. surface tension.
4. [Biochem.]
   • threonine.
   • thymine.
5. [Photog.] See T number. 
6. [Physics.]
   • tau lepton.
   • time reversal.
7. the launching time of a rocket or missile:
   T minus two.

T₁, 

1. Chemistry triiodothyronine.

T₂, 

1. Chemistry thyroxine.

t, [Statistics.]

1. Statistics a random variable having Student's t distribution.
2. Statistics the statistic employed in Student's t-test.

't, 

1. a shortened form of it, before or after a verb, as in
   'twas, 'tis, do't, see't.

T-, 

1. [U.S. Mil.] (in designations of aircraft) trainer:
   T-11.

t-, 

1. Chemistry tertiary.

-t, 

1. var. of -ed used in forming the past tense or past participle of certain verbs, usually occurring when the final consonant of the stem is voiceless, a lateral, or a nasal and there is internal vowel change in the root:
   slept;
   felt;
   dreamt.

T., 

1. tablespoon;
   tablespoonful.
2. Territory.
3. Township.
4. Tuesday.

t., 

1. Sport [Football.] tackle.
2. taken from.
3. Weights and Measures tare.
4. teaspoon;
   teaspoonful.
5. Physics temperature.
6. in the time of.
• Latin tempore
7. tenor.
8. Grammar tense.
9. territory.
10. time.
11. tome.
12. Weights and Measures ton.
13. town.
14. township.
15. transit.
16. Grammar transitive.
17. Weights and Measures troy.