ac·​ron | \ ˈa-ˌkrän, ˈa-krən\
plural -s

Definition of acron

: the unsegmented preoral part of the body of a segmented animal (as an arthropod)

Love words?

You must — there are over 200,000 words in our free online dictionary, but you are looking for one that’s only in the Merriam-Webster Unabridged Dictionary.

Start your free trial today and get unlimited access to America's largest dictionary, with:

  • More than 250,000 words that aren't in our free dictionary
  • Expanded definitions, etymologies, and usage notes
  • Advanced search features
  • Ad free!

Other Words from acron

acronal \ ˈa-​krə-​nəl \ adjective

First Known Use of acron

1901, in the meaning defined above

History and Etymology for acron

New Latin, from Greek akron mountain top, end, from neuter of akros sharp; akin to Greek akē point

Keep scrolling for more

Learn More about acron

Statistics for acron

Look-up Popularity

Time Traveler for acron

The first known use of acron was in 1901

See more words from the same year

Comments on acron

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


standardized text or formulaic language

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?
How Strong Is Your Vocabulary?

Test your vocabulary with our 10-question quiz!

Word Winder's CrossWinder

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

Love words? Need even more definitions?

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