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Coelenterate: meaning, definitions and examples

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coelenterate

 

[ siːˈlɛn.təˌreɪt ]

Noun
Context #1 | Noun

biological classification

Coelenterates, also known as cnidarians, are a diverse group of simple animals that include jellyfish, corals, and sea anemones. They are characterized by their radially symmetrical bodies and the presence of specialized cells called cnidocytes, which contain stinging structures. Coelenterates typically have a two-layered body wall and a central digestive cavity. They can exist in solitary or colonial forms, playing crucial roles in marine ecosystems.

Synonyms

cnidarian.

Examples of usage

  • Jellyfish are a type of coelenterate.
  • Coral reefs are formed by coelenterate polyps.
  • Coelenterates exhibit diverse forms of reproduction.

Etymology

The term 'coelenterate' is derived from the Greek words 'koilos,' meaning hollow, and 'enteron,' meaning intestine. The name reflects the general characteristic of these animals having a central cavity for digestion. Traditionally used to classify animals within the phylum Cnidaria, coelenterates include organisms such as jellyfish, sea anemones, and corals. The concept came into scientific use in the mid-19th century as biologists sought to categorize and describe the vast diversity of marine life. As knowledge of these organisms expanded, the use of the term evolved, but it continues to represent a fundamental group in the study of animal biology and marine ecology.

Word Frequency Rank

At position #40,245, this word is among the less frequently used terms in English. While interesting to know, it's not crucial for most English learners unless needed for specific purposes.