Definitions

from Wiktionary, Creative Commons Attribution/Share-Alike License

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

from the GNU version of the Collaborative International Dictionary of English

  • plural proper n. 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 The Century Dictionary and Cyclopedia

  • Same as Ostracopoda.

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

  • n. seed shrimps

Etymologies

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

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