Agnatha
the cl-ss of vertebrates comprising the lampreys, hagfishes, and several extinct forms, having no jaws or paired appendages.
historical examples
radula with elongated and pointed teeth, like those of the agnatha; a jaw present.
encyclopaedia britannica, 11th edition, volume 11, slice 5 various
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- Agnathan
any member of the vertebrate cl-ss . . noun any jawless eel-like aquatic vertebrate of the supercl-ss agnatha, which includes the lampreys and hagfishes adjective of, relating to, or belonging to the supercl-ss agnatha see also cyclostome agnathan (āg’nə-thən) adjective lacking a jaw. noun see jawless fish.
- Agnathia
agnathia agnathia ag·na·thi·a (āg-nā’thē-ə) n. congenital absence or partial absence of the lower jaw.
- Agnathous
having no jaws. belonging or pertaining to the cl-ss . historical examples agnathous: without jaws; specifically applied to those neuropteroid series in which the mouth structures are obsolescent. explanation of terms used in entomology john. b. smith adjective (zoology) (esp of lampreys and hagfishes) lacking jaws
- Agnatic
a relative whose connection is traceable exclusively through males. any male relation on the father’s side. related or akin through males or on the father’s side. allied or akin. historical examples if there were no children, then the inheritance p-ssed to the agnatic kindred, and in default of the latter, to the gentiles. ancient society […]
- Agner krarup erlang
agner krarup erlang person (1878-1929) a danish mathematician. erlang the language and unit were named after him. interested in the theory of probability, in 1908 erlang joined the copenhagen telephone company where he studied the problem of waiting times for telephone calls. he worked out how to calculate the fraction of callers who must wait […]