Jawless
Jawless
Jawless (/ˈdʒɔːlɪs/), from the Old English ceowan meaning "to chew" and the suffix -less meaning "without", refers to organisms, particularly fish, that lack a jaw. This term is most commonly used in the field of ichthyology, the study of fish.
Etymology
The term "jawless" is derived from the Old English ceowan, which means "to chew", and the suffix -less, which means "without". Thus, "jawless" literally means "without the ability to chew".
Pronunciation
Jawless is pronounced as /ˈdʒɔːlɪs/.
Definition
In a biological context, jawless refers to a group of fish that lack jaws. These fish are part of the superclass Agnatha, which includes both extinct and extant species. The two extant groups of jawless fish are the lampreys and the hagfish.
Related Terms
- Agnatha: A superclass of jawless fish, including both extinct and extant species.
- Lampreys: An extant group of jawless fish.
- Hagfish: Another extant group of jawless fish.
- Ichthyology: The study of fish.
See Also
External links
- Medical encyclopedia article on Jawless
- Wikipedia's article - Jawless
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