plural noun Con·chos·tra·ca \-ŋˈkästrəkə also -ˈkȯs-\

Definition of Conchostraca

  1. :  a small order of freshwater crustaceans (subclass Branchiopoda) entirely enclosed in a bivalve carapace


\-rəkən\ noun, plural


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.

Join MWU now and get access to America’s largest dictionary, with:

  • 300,000 words that aren't in our free dictionary
  • Expanded definitions, etymologies, and usage notes
  • Advanced search features
  • Ad free!

Origin and Etymology of conchostraca

New Latin, from conch- + -ostraca

Seen and Heard

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


to help become familiar with something

Get Word of the Day daily email!