plural noun
Pte·​ri·​idae | \ təˈrīəˌdē, teˈr- \

Definition of Pteriidae

: a family of bivalve mollusks (group Pectinaceae) most prominent in the Paleozoic and surviving chiefly in warm seas, including the pearl oysters, and having the right valve smaller and lower, the hinge line long and straight, the shell attached by a byssus, and the foot reduced

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 Pteriidae

New Latin, from Pteria, type genus (from pter- + -ia) + -idae

Keep scrolling for more

Learn More about Pteriidae

Statistics for Pteriidae

Cite this Entry

“Pteriidae.” Dictionary, Merriam-Webster, Accessed 30 Nov. 2020.

Comments on Pteriidae

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


Test Your Vocabulary

Musical Words Quiz

  • gramophone
  • Which word describes a musical performance marked by the absence of instrumental accompaniment?
Spell It

Can you spell these 10 commonly misspelled words?


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!