Wordnet 3.0
NOUN (1)
1.
spherical deep diving apparatus (lowered by a cable) for underwater exploration;
The Collaborative International Dictionary of English v.0.48:
bathysphere \bath"y*sphere\ n.
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.
[WordNet 1.5 +PJC]
WordNet (r) 3.0 (2006):
bathysphere
n 1: spherical deep diving apparatus (lowered by a cable) for
underwater exploration
Moby Thesaurus II by Grady Ward, 1.0:
19 Moby Thesaurus words for "bathysphere":
Aqua-Lung, air cylinder, aquascope, bathyscaphe, benthoscope,
diving bell, diving boat, diving chamber, diving goggles,
diving helmet, diving hood, diving mask, diving suit, periscope,
scuba, snorkel, submarine, swim fins, wet suit