Crustacean, a sort to swim alongside fish

• Tiny marine and freshwater crustaceans with a shrimp-like body enclosed in a bivalve shell

The Collaborative International Dictionary Word definitions in The Collaborative International Dictionary
ostracod \ostracod\ n. A member of the Ostracoda , an order of tiny marine and freshwater crustaceans with a shrimplike body enclosed in a bivalve shell. Syn: seed shrimp, mussel shrimp.

Wikipedia Word definitions in Wikipedia
Ostracods , or ostracodes, are a class of the Crustacea (class Ostracoda ), sometimes known as seed shrimp . Some 70,000 species (only 13,000 of which are extant ) have been identified, grouped into several orders. They are small crustaceans, typically ...

Wiktionary Word definitions in Wiktionary
alt. Any of many small crustaceans, of the class ''Ostracoda'', that resemble a shrimp enclosed in a bivalve shell. n. Any of many small crustaceans, of the class ''Ostracoda'', that resemble a shrimp enclosed in a bivalve shell.

WordNet Word definitions in WordNet
n. tiny marine and freshwater crustaceans with a shrimp-like body enclosed in a bivalve shell [syn: seed shrimp , mussel shrimp ]