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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.

Since familiarity is critical when traveling, Tu also suggests bringing the same food and water bowls your dog regularly uses at home.

From The Wall Street Journal • Mar. 25, 2026

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

Standing next to her father, Marco Jaime, she led the crowd through a celestial journey with her synth-heavy track “Solo Tu Bb.”

From Los Angeles Times • Mar. 16, 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

Besides donating computers, John Tu has given a couple of Freedom Writers jobs at his company with benefits and Christmas bonuses.

From "The Freedom Writers Diary" by The Freedom Writers

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.