active galactic nucleus See active galaxy
active galactic nucleus
again (shortwave transmission)


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  • Agnail

    . . Historical Examples I am told that an “agnail” was formerly called a “step-mother” in Yorkshire. The Romance of Words (4th ed.) Ernest Weekley noun another name for hangnail agnail ag·nail (āg’nāl’) n. A hangnail. A painful sore or swelling around a fingernail or toenail.

  • Agnate

    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 When the father died, the nearest male of kin, even though declared unqualified as an agnate, came in as guardian. Woman under socialism August […]

  • Agnatha

    the class 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

  • Agnathan

    any member of the vertebrate class . . noun any jawless eel-like aquatic vertebrate of the superclass Agnatha, which includes the lampreys and hagfishes adjective of, relating to, or belonging to the superclass Agnatha See also cyclostome agnathan (āg’nə-thən) Adjective Lacking a jaw. Noun See jawless fish.

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