Gyracanthus

noun
Gyr·​acan·​thus | \ ¦jir, ¦jīr + \

Definition of Gyracanthus

: a genus of acanthodian fishes of the Carboniferous known solely from large round sculptured spines

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!

History and Etymology for Gyracanthus

New Latin, from gyr- + -acanthus

Keep scrolling for more

Learn More about Gyracanthus

Statistics for Gyracanthus

Cite this Entry

“Gyracanthus.” The Merriam-Webster.com Dictionary, Merriam-Webster Inc., https://www.merriam-webster.com/dictionary/Gyracanthus. Accessed 7 December 2019.

Comments on Gyracanthus

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

WORD OF THE DAY

the study of flags

Get Word of the Day daily email!

Test Your Vocabulary

Semantic Drift Quiz

  • a twisty river
  • Which of the following was once a synonym for fun?
Spell It

Can you spell these 10 commonly misspelled words?

TAKE THE QUIZ
Bee Cubed

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!