bathythermograph

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bathythermograph

[bath-uh-thur-muh-graf, -grahf]
noun Oceanography.
an instrument that makes a record of the temperature at various depths in the ocean.

Origin:
1935–40; bathy- + thermograph

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Based on the Random House Dictionary, © Random House, Inc. 2014.
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American Heritage
Science Dictionary
bathythermograph   (bāth'ĭ-thûr'mə-grāf')  Pronunciation Key 
A device that records water temperature in relation to ocean depth.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Encyclopedia Britannica
Encyclopedia

bathythermograph

any of various oceanographic devices containing temperature- and pressure-sensitive elements and producing a continuous record of underwater temperature and pressure. Recoverable bathythermographs, lowered from a ship at rest or in motion, produce this record on a coated glass slide. Expendable types, often dropped from aircraft, radio back information from depths up to 300 m (1,000 feet) and are frequently employed in making surveys of large areas

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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Example sentences
The instrument, called an expendable bathythermograph, is little more than a shaped weight with a temperature sensor inside.
Similar to modern bathythermograph copper wire instrument.
Temperature profiles were obtained using a bathythermograph after each trawl tow.
Images for bathythermograph
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