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[bath-uh-sfeer] /ˈbæθ əˌsfɪər/
noun, Oceanography.
a spherical diving apparatus from which to study deep-sea life, lowered into the ocean depths by a cable.
Origin of bathysphere
First recorded in 1925-30; bathy- + -sphere Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
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British Dictionary definitions for bathysphere


a strong steel deep-sea diving sphere, lowered by cable
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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bathysphere in Science
A hollow, spherical steel diving chamber in which people are lowered by cable from a surface vessel to explore the ocean depths. In 1934 a bathysphere carrying William Beebe and an associate reached a record depth of over 923 m (3,028 ft). Because space in the bathysphere is cramped, dives longer than three-and-a-half hours are intolerable, and it was eventually supplanted by the bathyscaphe.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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