bathysphere

[bath-uh-sfeer]
noun Oceanography.
a spherical diving apparatus from which to study deep-sea life, lowered into the ocean depths by a cable.

Origin:
1925–30; bathy- + -sphere

Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
Cite This Source Link To bathysphere
Collins
World English Dictionary
bathysphere (ˈbæθɪˌsfɪə)
 
n
a strong steel deep-sea diving sphere, lowered by cable

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
Cite This Source
American Heritage
Science Dictionary
bathysphere   (bāth'ĭ-sfîr')  Pronunciation Key 
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.
Cite This Source
Encyclopedia Britannica
Encyclopedia

bathysphere

spherical steel vessel for use in undersea observation, provided with portholes and suspended by a cable from a boat. Built by the American zoologist William Beebe and the American engineer Otis Barton, the bathysphere made its first dives in 1930. On June 11, 1930, it reached a depth of 400 m, or about 1,300 feet, and in 1934, Beebe and Barton reached 900 m, or about 3,000 feet. Through these dives, the bathysphere proved its qualities but also revealed weaknesses. It was difficult to operate and involved considerable potential risks. A break in the suspension cable would have meant certain death for the observers; surface waves and resulting movement of the boat could have produced such a fatal strain. Because of these disadvantages, the bathysphere was supplanted by the safer, more maneuverable mesoscaphe and bathyscaphe.

Learn more about bathysphere with a free trial on Britannica.com.

Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
Cite This Source
Example sentences
Agency, heads a deep-sea expedition during which a manned bathysphere is attacked.
Related Words
Images for bathysphere
Copyright © 2014 Dictionary.com, LLC. All rights reserved.
  • Please Login or Sign Up to use the Recent Searches feature
FAVORITES
RECENT

;