bathysphere
/ˈbæθɪˌsfɪə(ɹ)/
bathysphere
English
Noun
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Definition
A spherical steel deep-diving chamber with perspex windows, in which persons are lowered to the depths by a cable to study the oceans and deep-sea life; the precursor to the bathyscaphe.
Etymology
From bathy- + -sphere. A genericization from the particular bathysphere in the 1930s named Bathysphere. The name bathysphere was coined decades after the introduction of the device in the 1890s.
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