plural noun

: an order of Crustacea including the Mysidae and related families and formerly with the Euphausiacea constituting the Schizopoda see opossum shrimp

Word History


New Latin, from Mysid-, Mysis, + -acea

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!

Dictionary Entries Near Mysidacea

Cite this Entry

“Mysidacea.” Dictionary, Merriam-Webster, Accessed 14 Apr. 2024.

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!