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bathysphere definition

☆ bathy·sphere (-sfir′)

noun

a round, watertight observation chamber lowered by cables into the sea to a depth of c. 900 m (c. 2,950 ft)

Etymology: bathy- + -sphere; coined (c. 1930) by (Charles) William Beebe

Webster's New World College Dictionary Copyright © 2009 by Wiley Publishing, Inc., Cleveland, Ohio.
Used by arrangement with John Wiley & Sons, Inc.

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