Ostracoda

Part of speech: noun

Definitions

1. A group of small, aquatic crustaceans characterized by a bivalve-like shell and commonly found in both freshwater and marine environments
2. These tiny organisms belong to a class of crustaceans that are recognized by their enclosed body structure and thrive in various water habitats
3. Representing a diverse class of crustaceans, they possess a distinctive carapace and inhabit a range of aquatic ecosystems, contributing to ecological studies

Etymology: Ostracoda is a scientific name, and its surprise lies in the Greek word it comes from. "Ostrakon" meant a broken piece of pottery, and it was also the name for the shards Athenians scratched with a name to vote someone into exile, which is where "ostracism" comes from. Zoologists in the 19th century took the Greek stem and built "Ostracoda" from it because these tiny crustaceans have a two-part carapace that looks like a little clamshell, or, to those who named them, like a fragment of pottery. The group is a class of crustaceans, usually under a millimetre to a few millimetres long, and the name is a modern Latinized coinage rather than an ancient one. Ancient Greek writers had no word for these animals, so the name was created by naturalists working with classical roots, using the "-a" plural ending typical of Latin-style taxonomic names.