Au

abbreviation (1)

Definition of Au

 (Entry 1 of 3)

author

Au

symbol

Definition of Au (Entry 2 of 3)

gold

AU

abbreviation (2)

Definition of AU (Entry 3 of 3)

1 angstrom unit
2 astronomical unit
3 [ Latin aures unitas ] both ears used especially in audiology and in writing prescriptions

History and Etymology for Au

Symbol

Latin aurum

Keep scrolling for more

Keep scrolling for more

More Definitions for Au

Au

symbol

Medical Definition of Au

 (Entry 1 of 2)

gold

Medical Definition of AU (Entry 2 of 2)

1 angstrom unit
2 antitoxin unit
3 [ Latin aures unitas ] both ears used especially in audiology and in writing prescriptions

History and Etymology for Au

Symbol

L aurum

Comments on Au

What made you want to look up Au? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

to move with exaggerated bouncy motions

Get Word of the Day daily email!

Test Your Vocabulary

Finance Words Quiz

  • a-piggy-bank
  • The etymology of mortgage is related most closely to which two words?
Name That Thing

Test your visual vocabulary with our 10-question challenge!

TAKE THE QUIZ
Citation

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!