Tethys

2 definitions found

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

  Tethys \Te"thys\, n. [NL., fr. Gr. ? an oyster, or ? a kind of
     ascidian.] (Zool.)
     A genus of a large naked mollusks having a very large, broad,
     fringed cephalic disk, and branched dorsal gills. Some of the
     species become a foot long and are brilliantly colored.
     [1913 Webster]



From WordNet (r) 2.0 [wn]:

  Tethys
       n 1: (Greek mythology) a Titaness and sea goddess; wife of
            Oceanus
       2: type genus of the family Aplysiidae [syn: {Aplysia}, {genus
          Aplysia}, {genus Tethus}]