Merriam-Webster Logo
SINCE 1828
Menu
dictionary thesaurus

Centrechinoida

plural noun
Cen·​trech·​i·​noi·​da | \ (ˌ)sen‧ˌtrekə̇ˈnȯidə\

Definition of Centrechinoida

: a large order of sea urchins having peristomial gills, sphaeridia, and an apically located anus — compare cidaroida , exocycloida

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 Centrechinoida

New Latin, from Centrechinus + -oida

Keep scrolling for more

Learn More about Centrechinoida

Dictionary Entries near Centrechinoida

centration

Centraxonia

centre

Centrechinoida

Centrechinus

centreman

-centric

Statistics for Centrechinoida

Look-up Popularity

Comments on Centrechinoida

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

Show Comments  Hide Comments 

WORD OF THE DAY

assiduous

Listen to the pronounciation of assiduous

showing great care, attention, and effort

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?
Spell It

Can you spell these 10 commonly misspelled words?

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!

Words at Play
Ask the Editors
Word Games