bathysphere

Pronunciation:  US [-sfɪr] UK ['bæθɪsfɪə(r)]
  • n.Sea ball (manned observation under the sea)
  • WebSea spherical submersible; Deep sea dive ball; Underwater investigations using spherical diving equipment
n.
1.
a strong steel diving sphere that can be lowered by cable to depths of 900 m (3000 ft)