agnathan
ag·nat·han
noun
1.
eel-shaped vertebrate without jaws or paired appendages including the cyclostomes and some extinct forms
Origin
From Agnatha, from Ancient Greek ἀ- (a-, “without”) + γνάθος (gnáthos, “jaw”).
Related words
Broader terms
Parts
WordNet 2.1 (Princeton University). Wiktionary (CC BY-SA). CMU Pronouncing Dictionary. WordNet 2.1 Copyright Princeton University. All rights reserved. Wiktionary content is available under the Creative Commons Attribution-ShareAlike Licence.