Opisthoparia

plural noun
Opis·​tho·​par·​ia | \əˌpisthəˈpa(a)rēə\

Definition of Opisthoparia 

: an order of trilobites including those in which the genal angles or spines are borne by the free cheeks

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 Opisthoparia

opisthoparian \⸗¦⸗⸗¦pa(a)rēən \ noun or adjective

History and Etymology for Opisthoparia

New Latin, from opisth- + -paria (from Greek pareia cheek)

Keep scrolling for more

Learn More about Opisthoparia

Share Opisthoparia

Statistics for Opisthoparia

Look-up Popularity

Comments on Opisthoparia

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

WORD OF THE DAY

to make faulty or ineffective

Get Word of the Day daily email!

Test Your Vocabulary

Find the Cousins

  • a-large-tree-with-many-branches
  • Which pair shares a common word ancestor?
How Strong Is Your Vocabulary?

Test your vocabulary with our 10-question quiz!

TAKE THE QUIZ
SCRABBLE® Sprint

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!