Standard Lemma guide

ostracod

noun · 2 senses · updated from the 2026-07-25 local source snapshot

Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.

Sound

Pronunciation

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No pronunciation record was provided for this word.

1

noun

Meaning 1

Any of many small crustaceans, of the class Ostracoda, that resemble a shrimp enclosed in a bivalve shell.

Definition source: English Wiktionary via Wiktextract

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

noun

Meaning 2

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

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: seed shrimp, mussel shrimp

Antonyms: none provided

Broader terms: crustacean

History

Etymology

From Ancient Greek ὀστρακώδης (ostrakṓdēs, “covered with shell”), from ὄστρακον (óstrakon, “clay pot; shell”); compare translingual Ostracoda.

Across languages

Translations

7 source translations are retained for this English entry.

  • Chinese Mandarin: 介形蟲 /介形虫 (jièxíngchóng) — member of Ostracoda
  • Finnish: raakkuäyriäinen — member of Ostracoda
  • Japanese: 貝虫 (kaimushi) — member of Ostracoda
  • Japanese: カイムシ — member of Ostracoda
  • Latin: ostracod — member of Ostracoda
  • Polish: małżoraczek — member of Ostracoda
  • Spanish: ostracod — member of Ostracoda