bathythermograph

American  

[bath-uh-thur-muh-graf, -grahf] / ˌbæθ əˈθɜr məˌgræf, -ˌgrɑf /

noun

Oceanography.

1. an instrument that makes a record of the temperature at various depths in the ocean.

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bathythermograph Scientific  

/ băth′ĭ-thûr′mə-grăf′ /

1. A device that records water temperature in relation to ocean depth.

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Etymology

Origin of bathythermograph

First recorded in 1935–40; bathy- + thermograph

Example Sentences

He came to the U.S. from his native South Africa and literally talked his way into M.I.T., where he invented the bathythermograph - a heavy, torpedo-shaped device that measures temperature as it falls through the water.

From Washington Times

Equipped with a gadget of Woods Hole's devising, a bathythermograph, many a U.S. sub saved itself during World War II by finding a temperature "hill" in the ocean and slip ping behind it.

From Time Magazine Archive