hydroscope

American  

[hahy-druh-skohp] / ˈhaɪ drəˌskoʊp /

noun

1. an optical device for viewing objects below the surface of water.

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hydroscope British  

/ ˈhaɪdrəˌskəʊp, ˌhaɪdrəˈskɒpɪk /

noun

1. any instrument for making observations of underwater objects

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Other Word Forms

• hydroscopic adjective
• hydroscopical adjective
• hydroscopicity noun

Etymology

Origin of hydroscope

First recorded in 1670–80; hydro- ¹ + -scope

Example Sentences

Hydroscope, hī′dro-skōp, n. a kind of water-clock, consisting of a cylindrical graduated tube, from which the water escaped through a hole in the bottom.

From Project Gutenberg

The former was a hydroscope, who fell into convulsions whenever he passed over running water.

From Project Gutenberg

The muscles which would contract the fingers upon the arms of the stick, pass the shoulder; and it is worthy of remark that one of the medical men who witnessed the experiments made on Bleton the hydroscope, expressly alludes to a slight rising of the shoulders during the rotation of the divining rod.

From Project Gutenberg

He calls it a hydroscope and describes it as having the form and size of a flute, and graduated in such wise that it can be used for determining the density of liquids.

From Project Gutenberg

For the preliminary work of treasure finding, he perfected his hydroscope, a kind of sea telescope consisting of a floating platform from which depend a series of tubes ending in a chamber equipped with electric lamps, lenses and reflectors, like so many gigantic eyes through which the observer is able to view the illuminated bottom of bay or ocean.

From Project Gutenberg