Dictionary.com
Thesaurus.com
Jump To:

au

1 American  
[oh] / oʊ /
French.
  • aux
    plural
  1. to the; at the; with the.


Au 2 American  

abbreviation

  1. author. Also au


Au 3 American  
Symbol, Chemistry.
  1. gold.


AU 4 American  

abbreviation

  1. astronomical unit.


A.U. 5 American  
Or a.u.

abbreviation

  1. angstrom unit.


au 1 British  

abbreviation

  1. Australia

"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

Au 2 British  

symbol

  1. gold

"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

AU 3 British  

abbreviation

  1. African Union

  2. Also: a.u.. angstrom unit

  3. Also: a.u.. astronomical unit

"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

AU Scientific  
  1. Abbreviation of astronomical unit


Etymology

Origin of Au

From the Latin word aurum


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.

See Examples For:

They made off with a portrait titled "Madame Colonna Romano" and the depiction of a woman at a well called "Jeune femme au puits", his office said.

From Barron's ● Sep. 8, 2026

The last surviving subject of King Edward VII, as a teenager she travelled to India in 1927 and began working as an au pair to a military family there.

From BBC ● Aug. 21, 2026

It’s important to remember that it was 1976, so this particular fashion choice was not yet au courant, because they had just codified it.

From Salon ● Aug. 10, 2026

They just put the most amazing thing on their menu; a steak frites with masala au poivre.

From Los Angeles Times ● Aug. 7, 2026

And what I saw were eyes that were sixty-percent-cacao chocolate, a face that was cafe au lait, and an expression that was so familiar it made my whole body ring like a bell.

From "When You Reach Me" by Rebecca Stead

"What Charlie, Jackson, and Charlie have achieved in just over a decade is spectacular and rare, and we have big plans for Au as we welcome the brand into the Sazerac family."

From BBC ● Sep. 15, 2026

He learned about the importance of balance while working with Frank Guidara, the former CEO of Au Bon Pain and father of celebrated restaurateur Will Guidara, former co-owner of Manhattan’s Michelin-starred Eleven Madison Park.

From The Wall Street Journal ● Sep. 4, 2026

AI demand boosted by agentic AI penetration, enterprise inference adoption, broader rack-scale deployments, and higher-value storage solutions are all expected to support the segment’s top line, Au notes.

From The Wall Street Journal ● May 25, 2026

The findings were published in ACS Environmental Au.

From Science Daily ● Apr. 11, 2026

In Haiti, we used to travel to the top of the mountain ranges near Au Cap for their cool winds.

From "American Street" by Ibi Zoboi

The main diplomatic effort is being led by the AU, which has called for an immediate cessation of hostilities and a return to direct talks.

From BBC ● Sep. 25, 2026

AngloGold Ashanti AU 1.65%increase; green up pointing triangle said higher gold prices helped deliver a jump in quarterly earnings, with record free cash flow enabling an up to $2 billion share buyback and higher dividend.

From The Wall Street Journal ● May 8, 2026

That’s because the East Region will be held in Washington, where AU is located.

From Los Angeles Times ● Mar. 20, 2026

They have routinely blocked attempts to hand real enforcement power to the AU that could constrain their action, leaving it under-funded and under-equipped.

From Barron's ● Feb. 13, 2026

She sprawled on the floor in her white T-shirt and blue AU sweatpants, stunned but not completely surprised by his explosive reaction.

From "The Other Wes Moore: One Name, Two Fates" by Wes Moore

In addition to the Global Reparation Fund, which will be championed by a committee of experts set up by the A.U.

From Seattle Times ● Nov. 16, 2023

But despite a public invitation earlier this month for the two sides to meet in South Africa, the A.U. appears to have made few logistical or diplomatic preparations for talks, diplomats said.

From Washington Post ● Oct. 17, 2022

A.U. helicopters helped the soldiers hold the camp, they said.

From Washington Post ● May 3, 2022

David Berri, a professor at Southern Utah University who has studied sports economics and gender issues, sees long-term potential for A.U., so long as the league maintains low operating costs.

From New York Times ● Feb. 23, 2022

“Say you do A.U. one, raising the inner eyebrows, and six, raising the cheeks, and fifteen, the lowering of the corner of the lips,” Ekman said, and then did all three.

From "Blink" by Malcolm Gladwell

Random Word

Spin the wheel and learn a new word!

Get a word

Vocabulary.com logo
by dictionary.com

Dictionary.com's Learning Companion

Go beyond just looking up words.
Remember them forever with VocabTrainer.

Start training