Situated around the jaws; specifically designating a girdle of processes surrounding the mouth of a sea urchin, which serves as the site of attachment of the muscles of the chewing apparatus.
Origin
Late 19th century; earliest use found in The Athenaeum.
Definition of perignathic in US English:
perignathic
adjective
Situated around the jaws; specifically designating a girdle of processes surrounding the mouth of a sea urchin, which serves as the site of attachment of the muscles of the chewing apparatus.
Origin
Late 19th century; earliest use found in The Athenaeum.