bathythermograph

[bath-uh-thur-muh-graf, -grahf]

bath·y·ther·mo·graph

[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
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
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Bathythermograph has a plethora of syllables.
So is antidisestablishmentarianism. Does it mean:
opposition to the withdrawal of state support or recognition from an established church, esp. the Anglican Church in 19th-century England.
an obscure term ostensibly referring to a lung disease caused by silica dust, sometimes cited as one of the longest words in the English language.
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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