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 (ŏs′trə-kŏd′) or os·tra·code (-kōd′)
Any of numerous small chiefly aquatic crustaceans of the class Ostracoda, having a bivalve carapace and including many extinct species that are commonly found as fossils.

[New Latin Ostracōda, subclass name, from Greek ostrakōdēs, testaceous, from ostrakon, shell; see ost- in Indo-European roots.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


(ˈɒstrəˌkɒd) or


(Zoology) any minute crustacean of the mainly freshwater subclass Ostracoda, in which the body is enclosed in a transparent two-valved carapace
[C19: via New Latin from Greek ostrakōdēs having a shell, from ostrakon shell]
ostracodan, ˌostraˈcodous adj
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

seed′ shrimp`

any of numerous tiny marine and freshwater crustaceans of the subclass Ostracoda, having a shrimplike body enclosed in a hinged bivalve shell. Also called ostracod.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.ostracod - tiny marine and freshwater crustaceans with a shrimp-like body enclosed in a bivalve shellostracod - tiny marine and freshwater crustaceans with a shrimp-like body enclosed in a bivalve shell
crustacean - any mainly aquatic arthropod usually having a segmented body and chitinous exoskeleton
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
References in periodicals archive ?
The identified ostracod species Conchoprimitia social, Protallinnella grewingkii, Aulacopsis simplex and Unisulcopleura punctosulcata from the limestones below and above the Volkhov Oil Collector in the Vergale-50 core section are common for upper Dapingian and lower Darriwilian strata in Latvia and southern Estonia (Tinn et al.
The Khadum Formation is subdivided by its lithological parameters into three subformations: the lower Pshekh subformation, the middle Polbin or ostracod subformation and the upper Morozkin ravine subformation.
They go with males who've focused on sperm transfer efficiency, developing a strong "pumping mechanism" in their proportionally oversized ostracod penises.
But thanks to thousands of ostracod species still alive today, it is well documented how male shells differ from those of the females they seek to woo.
From these, 12 taxa were identified, four of Cladocera, three of Copepoda, four of Rotifera and the larvae of Chaoborus (Table 1), however total diversity is higher since other groups such as an Ostracod and another Diptera larvae were observed but it was not possible to identify them due to their low abundance.
Previously the age of this succession had been regarded as wholly Early Devonian (Lochkovian or Pragian), based principally on an undescribed ostracod, which Berdan (1990) considered to belong to a quadrilobate beyrichiacean form allied to Cornikloedenina; but it is more like Carinokloedenia from the Pragian of Podolia and the Lochkovian of northern France.
The caption read: Ostracod crustaceans, kind of like bioluminescent phytoplankton, lighting up the shore on Mudhdhoo Island in the Maldives.
The total abundance and simple diversities of ostracod fossil in Zone I was relatively lower than in Zone III.
Radiocarbon-dated Holocene pollen and ostracod sequences from barrage tufa-dammed fluvial systems in the White Peak, Derbyshire, U.K.
Ostracod interpretation of paleodepth of Miocene (Lawer Badenian) calcareous clays near Brno, Czechoslovakia.
Scientists from Europe, the US, and Asia discuss freshwater and marine ostracod genera/species and the ostracod family Entocytherids, including revisions of genera, descriptions of new species, and new studies on biogeography, ecology, and morphology.
The creature-related to crabs, lobsters and shrimp-is an ostracod, or a type of crustacean sometimes known as seed shrimp.