D defs.my
Entry 1 sense Webster, 1913

bathysphere

· bath·y·sphere · IPA /ˈbæθɪˌsfɪə(ɹ)/
01 n. a spherical deep diving apparatus (lowered by a cable) for underwater exploration; it is constructed with a strong steel shell to withstand…
  1. 1.
    a spherical deep diving apparatus (lowered by a cable) for underwater exploration; it is constructed with a strong steel shell to withstand high pressures at the ocean bottom.