Library / English Dictionary

    AGNATHAN

    Pronunciation (US): Play  (GB): Play

     I. (noun) 

    Sense 1

    Meaning:

    Eel-shaped vertebrate without jaws or paired appendages including the cyclostomes and some extinct formsplay

    Synonyms:

    agnathan; jawless fish; jawless vertebrate

    Classified under:

    Nouns denoting animals

    Hypernyms ("agnathan" is a kind of...):

    aquatic vertebrate (animal living wholly or chiefly in or on water)

    Hyponyms (each of the following is a kind of "agnathan"):

    ostracoderm (extinct fish-like jawless vertebrate having a heavily armored body; of the Paleozoic)

    heterostracan (extinct jawless fish with the anterior part of the body covered with bony plates; of the Silurian and Devonian)

    cephalaspid; osteostracan (extinct jawless fish of the Devonian with armored head)

    anaspid (extinct small freshwater jawless fish usually having a heterocercal tail and an armored head; of the Silurian and Devonian)

    conodont (small (2 inches long) extinct eellike fish with a finned tail and a notochord and having cone-shaped teeth containing cellular bone; late Cambrian to late Triassic; possible predecessor of the cyclostomes)

    cyclostome (primitive aquatic vertebrate)

    lamper eel; lamprey; lamprey eel (primitive eellike freshwater or anadromous cyclostome having round sucking mouth with a rasping tongue)

    hag; hagfish; slime eels (eellike cyclostome having a tongue with horny teeth in a round mouth surrounded by eight tentacles; feeds on dead or trapped fishes by boring into their bodies)

    Holonyms ("agnathan" is a member of...):

    Agnatha; superclass Agnatha (superclass of eel-shaped chordates lacking jaws and pelvic fins: lampreys; hagfishes; some extinct forms)

    Credits


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