Definition of aux

1 auxiliary Three pairs of … jacks on the rear edge of the chassis are marked CD, aux, and line out.— Daniel Kumin
2 auxiliary verb

Learn More About aux

Dictionary Entries Near aux

auwe

aux

auxano-

See More Nearby Entries 

Statistics for aux

Cite this Entry

“Aux.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/aux. Accessed 3 Aug. 2021.

Style: MLA
MLACheck Mark Icon ChicagoCheck Mark Icon APACheck Mark Icon Merriam-WebsterCheck Mark Icon

Keep scrolling for more

More Definitions for aux

aux

abbreviation

Medical Definition of aux

auxiliary

WORD OF THE DAY

Test Your Vocabulary

Dog Words Quiz

  • shiba puppy more or less demanding cuddles
  • Which of the following animals has a dog in its etymology?
How Strong Is Your Vocabulary?

Test your vocabulary with our 10-question quiz!

TAKE THE QUIZ
 AlphaBear 2

Spell words. Make bears.

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!