prionodont
/prʌɪˈɒnə(ʊ)dɒnt/adjective
Zoology. In the shell of a bivalve: designating a type of hinge in which a series of teeth on one valve are inserted into a corresponding series of sockets in the other.
noun
A prionodont bivalve.
Origin
Late 19th century; earliest use found in William Healey Dall (1845–1927), natural historian, paleontologist, and malacologist. From ancient Greek πριον-, πρίων a saw + -odont.