Dictionary.com
Thesaurus.com

Tu

1 American  
Symbol,

  1. (formerly) thulium.

Tu. 2 American  

abbreviation

  1. Tuesday.

t.u. 3 American  

abbreviation

  1. trade union.

T.U. 4 American  

abbreviation

  1. toxic unit.

  2. Trade Union.

  3. Training Unit.

TU British  

abbreviation

  1. trade union

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

One way to help de-stress dogs before traveling is with medications such as Trazodone and Xanax, Tu says.

From The Wall Street Journal • Mar. 25, 2026

Tu generally prefers carriers over harnesses for safety and security.

From The Wall Street Journal • Mar. 25, 2026

When her best friend got married seven years ago, Tran Tu Linh gave her a gold ring weighing just over 0.1 ounces.

From Barron's • Jan. 30, 2026

Earlier, British top seeds Julian Cash and Lloyd Glasspool suffered a shock second-round defeat by Australian wildcards James McCabe and Li Tu in the men's doubles.

From BBC • Jan. 23, 2026

Tu Celia Celia’s Letters: 1942-1949 101 February 11, 1949 Mi querido Gustavo, I’ve been reading the plays of Moliere and wondering what separates suffering from imagination.

From "Dreaming in Cuban" by Cristina García

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.