plural noun
Ge·​phyr·​ea | \ jəˈfirēə, ˌjefəˈrēə \

Definition of Gephyrea

: a probably artificial group of marine worms variously regarded as a phylum or as a class of Annelida, including Echiuroidea, Sipunculoidea, and Priapuloidea, and comprising worms that are unsegmented as adults and have coeloms and separate sexes and typically a single pair of nephridia

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 Gephyrea

gephyrean \ jəˈfirēən , ¦jefə¦rēən \ adjective or noun

History and Etymology for Gephyrea

New Latin, from Greek gephyra bridge; perhaps akin to Armenian kamurj bridge

Keep scrolling for more

Learn More about Gephyrea

Statistics for Gephyrea

Cite this Entry

“Gephyrea.” The Dictionary, Merriam-Webster Inc., Accessed 14 December 2019.

Comments on Gephyrea

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


to assail by words or arguments

Get Word of the Day daily email!

Test Your Vocabulary

Great Scrabble Words—A Quiz

  • scrabble tiles that read scrabble quiz
  • Which of the following Q-without-U words means the number five in cards or dice?
Spell It

Can you spell these 10 commonly misspelled words?

Add Diction

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!