ostracod

noun
os·​tra·​cod | \ ˈä-strə-ˌkäd How to pronounce ostracod (audio) \
variants: or less commonly ostracode \ ˈä-​strə-​ˌkōd How to pronounce ostracode (audio) \

Definition of ostracod

: any of a subclass (Ostracoda) of very small aquatic crustaceans that have the body enclosed in a bivalve carapace, the body segmentation obscured, the abdomen rudimentary, and only seven pairs of appendages

Examples of ostracod in a Sentence

Recent Examples on the Web

Oakley and Ellis studied ten groups of organisms, including fireflies, octopuses, sharks and tiny crustaceans called ostracods. Quanta Magazine, "In the Deep, Clues to How Life Makes Light," 1 Dec. 2016 Modern ostracods today are similarly well-endowed and some produce absolutely humongous sperm, ten times the size of the male himself. Tim Laman, National Geographic, "Hot Water: The Bizarre Sex Lives of Ocean Creatures," 14 Feb. 2016 Modern ostracods today are similarly well-endowed and some produce absolutely humongous sperm, ten times the size of the male himself. National Geographic, "Hot Water: The Bizarre Sex Lives of Ocean Creatures," 14 Feb. 2016

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'ostracod.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of ostracod

1865, in the meaning defined above

History and Etymology for ostracod

from the base of New Latin Ostracoda, neuter plural, borrowed from Greek ostrakṓdēs "like an earthern pot (of a crab shell), testaceous," from óstrakon "earthen vessel, potsherd" + -ōdēs "having the qualities of" (originally, "smelling of," s-stem adjective from the base of ózein "to smell, give off an odor," as in anthemṓdēs "smelling like flowers" > "flowery, blooming") — more at ostracon, odor

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Statistics for ostracod

Last Updated

17 Sep 2019

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Time Traveler for ostracod

The first known use of ostracod was in 1865

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More from Merriam-Webster on ostracod

Britannica.com: Encyclopedia article about ostracod

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