coelenterata: meaning, definition, pronunciation and examples
C2/ExpertHighly technical/academic (zoology, marine biology); historical/obsolete in modern taxonomy.
Quick answer
What does “coelenterata” mean?
A major taxonomic group of invertebrate animals characterized by a simple, sac-like body with a single opening (mouth/anus), stinging cells (cnidocytes), and radial symmetry. Includes jellyfish, corals, and sea anemones.
Audio
Pronunciation
Definition
Meaning and Definition
A major taxonomic group of invertebrate animals characterized by a simple, sac-like body with a single opening (mouth/anus), stinging cells (cnidocytes), and radial symmetry. Includes jellyfish, corals, and sea anemones.
In modern phylogenetic taxonomy, Coelenterata is considered an obsolete term that has been largely superseded by the separate phyla Cnidaria and Ctenophora, though it may still be used in some historical or general biological contexts to refer to animals with a similar body plan.
Dialectal Variation
British vs American Usage
Differences
No significant difference in meaning or usage. Both regions follow the same scientific conventions regarding its historical vs. current use.
Connotations
Conveys a formal, academic, and somewhat dated tone in both varieties.
Frequency
Extremely rare in general language. Usage is confined to specialized textbooks, historical literature, and some teaching contexts in both British and American English.
Grammar
How to Use “coelenterata” in a Sentence
[The] Coelenterata [include/contain/comprise]...[Organisms] [classified/grouped] among the Coelenterata.The [phylum/group] Coelenterata [is/was]...Vocabulary
Collocations
Examples
Examples of “coelenterata” in a Sentence
adjective
British English
- The coelenterate body plan is remarkably efficient for a sessile lifestyle.
- He studied coelenterate nervous systems.
American English
- A coelenterate organism, like a hydra, has tentacles.
- Coelenterate morphology was a key topic in the historical text.
Usage
Meaning in Context
Business
Virtually never used.
Academic
Used in historical biological texts, comparative anatomy, and some introductory biology courses to describe a grade of organization. Requires explanation that it is a paraphyletic or obsolete grouping.
Everyday
Not used.
Technical
Used with precision to refer to a specific historical taxonomic concept. Often appears with qualifiers like 'formerly known as' or 'the obsolete phylum Coelenterata'.
Vocabulary
Synonyms of “coelenterata”
Strong
Neutral
Weak
Vocabulary
Antonyms of “coelenterata”
Watch out
Common Mistakes When Using “coelenterata”
- Using it as a singular noun (a coelenterata) – it is traditionally plural.
- Using it without context in modern scientific writing, as it is considered an outdated classification.
- Mispronouncing the initial 'coe' as /koʊ/ instead of /siː/ or /sə/.
FAQ
Frequently Asked Questions
No, it is considered an obsolete term. Modern taxonomy separates the animals once grouped as Coelenterata into the distinct phyla Cnidaria (jellyfish, corals, anemones) and Ctenophora (comb jellies).
It comes from Greek 'koilos' (hollow) and 'enteron' (intestine), referring to the animals' simple, sac-like digestive cavity with a single opening.
Primarily in historical contexts, in some older textbooks, or in general biological discourse to efficiently refer to the collective characteristics of cnidarians and ctenophores before their phylogenetic separation was fully understood.
A diploblastic body plan (two tissue layers) with radial symmetry and a gastrovascular cavity (a hollow gut with a single opening functioning as both mouth and anus).
A major taxonomic group of invertebrate animals characterized by a simple, sac-like body with a single opening (mouth/anus), stinging cells (cnidocytes), and radial symmetry. Includes jellyfish, corals, and sea anemones.
Coelenterata is usually highly technical/academic (zoology, marine biology); historical/obsolete in modern taxonomy. in register.
Coelenterata: in British English it is pronounced /siːˌlɛntəˈreɪtə/, and in American English it is pronounced /səˌlɛntəˈreɪdə/. Tap the audio buttons above to hear it.
Learning
Memory Aids
Mnemonic
Coel-enter-ata: Think of a 'coel' (cavity) where you 'enter' (one opening) — it's a simple sac-like animal.
Conceptual Metaphor
A SIMPLE BAG is a Coelenterate (one opening for everything).
Practice
Quiz
Why is the term 'Coelenterata' rarely used in modern scientific papers?