acantha

noun
acan·​tha | \ əˈkan(t)thə \
plural -s

Definition of acantha

: a spine or spinous fin

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!

First Known Use of acantha

circa 1771, in the meaning defined above

History and Etymology for acantha

New Latin, from Greek akantha thorn, spine of a fish

Keep scrolling for more

Learn More About acantha

Time Traveler for acantha

Time Traveler

The first known use of acantha was circa 1771

See more words from the same year

Dictionary Entries Near acantha

acanth-

acantha

Acanthaceae

See More Nearby Entries 

Statistics for acantha

Cite this Entry

“Acantha.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/acantha. Accessed 30 Jul. 2021.

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

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
Universal Daily Crossword

A daily challenge for crossword fanatics.

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!