au

[ oh ]
/ oʊ /

plural aux [oh] /oʊ/. French.

to the; at the; with the.
Compare à la.

Definition for au (2 of 4)

Au

author.Also au
Symbol, Chemistry. gold.

Origin of Au

From the Latin word aurum

Definition for au (3 of 4)

Definition for au (4 of 4)

A.U.

or a.u.


angstrom unit.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for au

British Dictionary definitions for au (1 of 3)

au

the internet domain name for

Australia

British Dictionary definitions for au (2 of 3)

Au

the chemical symbol for

gold

Word Origin for Au

from New Latin aurum

British Dictionary definitions for au (3 of 3)

AU

abbreviation for

African Union
Also: a.u. angstrom unit
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

Medicine definitions for au (1 of 2)

Au

The symbol for the elementgold

Medicine definitions for au (2 of 2)

AU

abbr.

auris utraque (each ear)
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

Science definitions for au (1 of 3)

Au

The symbol for gold.

Science definitions for au (2 of 3)

AU

Abbreviation of astronomical unit

Science definitions for au (3 of 3)

gold
[ gōld ]

Au

A soft, shiny, yellow element that is the most malleable of all the metals. It occurs in veins and in alluvial deposits. Because it is very durable, resistant to corrosion, and a good conductor of heat and electricity, gold is used as a plated coating on electrical and mechanical components. It is also an international monetary standard and is used in jewelry and for decoration. Atomic number 79; atomic weight 196.967; melting point 1,063.0°C; boiling point 2,966.0°C; specific gravity 19.32; valence 1, 3. See Periodic Table. See Note at element.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.