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bath·y·scaphe(băth′ĭ-skăf′, -skāf′) also bath·y·scaph (-skăf′)
A free-diving deep-sea vessel consisting of a large flotation hull with a crewed observation capsule attached to its underside, usually capable of reaching the deepest parts of the ocean.
[bathy- + Greek skaphos, boat.]
(Physical Geography) a submersible vessel having a flotation compartment with an observation capsule underneath, capable of reaching ocean depths of over 10 000 metres (about 5000 fathoms)
[C20: from bathy- + -scaph, from Greek skaphē light boat]
bathyscaphe, bathyscape, bathyscaph
Oceanography. a small, modified submarine for deep-sea exploration, usually having a spherical observation chamber fixed under a buoyancy chamber.See also: Depth