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Agnatha

American  
[ag-nuh-thuh] / ˈæg nə θə /

noun

  1. the class of vertebrates comprising the lampreys, hagfishes, and several extinct forms, having no jaws or paired appendages.

Etymology

Origin of Agnatha

1875–80; < New Latin, equivalent to Greek a- a- 6 + -gnatha, neuter plural of -gnathos -gnathous

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Here we will consider the traditional groups Agnatha, Chondrichthyes, Osteichthyes, Amphibia, Reptilia, Aves, and Mammalia, which constitute classes in the subphylum Vertebrata.

From Textbooks • Jan. 1, 2015

Radula with elongated and pointed teeth, like those of the Agnatha; a jaw present.

From Encyclopaedia Britannica, 11th Edition, Volume 11, Slice 5 "Gassendi, Pierre" to "Geocentric" by Various

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.