dibranchiate
Definition
- Noun:
- A cephalopod having two gills: A dibranchiate is a member of the Dibranchiata, a subclass or group of cephalopods (such as squids, cuttlefish, and octopuses) characterized by having two gills.
Usage Examples
- Noun:
- The squid is a common example of a dibranchiate.
- Scientists study the anatomy of the dibranchiate to understand cephalopod evolution.
Advanced Usage
- Scientific Classification: The term is primarily used in zoological and biological contexts to classify and describe certain mollusks. It is often contrasted with "tetrabranchiate" (having four gills), which includes the nautilus.
- The class Cephalopoda is divided into dibranchiate and tetrabranchiate forms.
Variants and Related Words
- Dibranchiata (n): The taxonomic group (subclass or superorder) comprising the dibranchiate cephalopods.
- Dibranchiate mollusk (n phrase): A more descriptive term for the same animal.
Synonyms
- Two-gilled cephalopod: A descriptive synonym.
- Coleoid: A more modern taxonomic term (subclass Coleoidea) that largely corresponds to the dibranchiate cephalopods, as it includes squids, octopuses, and cuttlefish, but excludes the nautilus.
Antonyms
- Tetrabranchiate (n): A cephalopod having four gills, such as the nautilus.
Noun
-
cephalopods having two gills
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