D defs.my
Entry 1 sense Webster, 1913

Tethys

· Te·thys · IPA /ˈtɛθɪs/
01 n. A genus of a large naked mollusks having a very large, broad, fringed cephalic disk, and branched dorsal gills. Some of the species become …
  1. 1.
    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.(Zool.)