Agnatha agnatha • agnathan · · · Info · Definitions · Characters · · Agnatha · · Text Latin · · Script 7 · · Length 3 · · Syllables Definitions · · · (noun) superclass of eel-shaped chordates lacking jaws and pelvic fins: lampreys; hagfishes; some extinct forms. Synonyms: superclass Agnatha. · · Noun Definition 1 Characters · · A latin capital letter a U+0041 a latin small letter a U+0061 g latin small letter g U+0067 h latin small letter h U+0068 n latin small letter n U+006E t latin small letter t U+0074