Hypoarion

1 definition found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  Hypoarion \Hy`po*a"ri*on\, n.; pl. {Hypoaria}. [NL., fr. Gr.
     "ypo` beneath + ? a little egg.] (Anat.)
     An oval lobe beneath each of the optic lobes in many fishes;
     one of the inferior lobes. --Owen.
     [1913 Webster]