Definitions

from The Century Dictionary.

  • Same as Ostracopoda.

from the GNU version of the Collaborative International Dictionary of English.

  • proper noun plural (Zoöl.) An order of Entomostraca possessing shrimplike bodies enclosed in hard bivalve shells; called also seed shrimp and mussel shrimp. They were formerly referred to as Ostracoidea. They are of small size, and swim freely about; many are less than 1 mm in length. Microfossils of certain extinct orders have been found extending back to the Cambrian age.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • proper noun A taxonomic class within the subphylum Crustacea — the ostracods.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • noun seed shrimps

Etymologies

from Wiktionary, Creative Commons Attribution/Share-Alike License

From Ancient Greek ὀστρακώδης (ostrakōdēs, "covered with shell"), from ὄστρακον (ostrakon, "shell").

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