Word.ws English Dictionary

T3

UK/ˌtiːˈθɹiː/US/ˌtiˈθɹi/

T3 noun: a tax reporting form used by estates and trusts. Also the abbreviation of triiodothyronine.

Noun

T3 (plural T3s)

  1. (Canada) A tax reporting form used by estates and trusts.
  2. (Australia) A transit lane restricted to vehicles with a minimum of three occupants.

Proper noun

T3

  1. A proprietary network protocol.
  2. A network backbone connection equivalent to 28 T1 lines, typically fiber optic.

Also used as

T3 is also the abbreviation of triiodothyronine.

Forms of T3

pluralT3s

Words formed from T3

Words that rhyme with T3

48 more rhymesFewer rhymes

Questions about T3

What does T3 mean?
T3 means a tax reporting form used by estates and trusts.
What part of speech is T3?
T3 can be a noun or a proper noun.
How do you pronounce T3?
T3 is pronounced /ˌtiːˈθɹiː/ (UK).
What is the plural of T3?
The plural of T3 is T3s.

Words near T3 in the dictionary

  1. T20
  2. T2D
  3. T2DM
  4. T2s
  5. T2T
  6. T3
  7. t3h
  8. T3s
  9. T4
  10. T4s
  11. t4t

Source and license

Adapted from Wiktionary: T3 (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

Last updated:

Pronunciation audio from Wikimedia Commons, each file under its own free license: en-au-T3.ogg.

Cite this entry: “T3.” Word.ws, https://word.ws/t3. Based on Wiktionary, CC BY-SA 4.0.