jawless
Definition
- Adjective:
- Lacking jaws; having no jaw or jaws: Describes an animal that does not possess a jawbone structure. This is a biological and anatomical classification.
Usage
- The term "jawless" is used primarily in zoological and paleontological contexts to describe a specific class of vertebrates. It is a technical adjective.
- It is typically used attributively (before a noun) to classify animals.
Examples
- Adjective:
- Lampreys and hagfish are examples of jawless fish.
- The fossil record shows that jawless vertebrates were among the earliest forms of life.
Advanced Usage
- "jawless vertebrate": A formal term for any member of the superclass Agnatha, which includes extinct and living species without jaws.
- The study focused on the evolution of jawless vertebrates.
Variants and Related Words
- Jawed (adj): The opposite state; having jaws.
- Sharks are jawed fish, unlike lampreys.
Synonyms
- Agnathan (adj/n): Technically synonymous in a biological context, meaning "jawless."
- Agnathan species are of great interest to evolutionary biologists.
Different Meanings
- The word "jawless" has a single, specific meaning related to anatomy. It does not have common idiomatic or figurative uses.
Adjective
-
of animals having no jaw
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