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

It might be said that he divined the course of seams in the depths of the coal mine as a hydroscope reveals springs in the bowels of the earth.

From The Underground City, or, the Child of the Cavern by Verne, Jules

Brown had lugged the pneumatic raft down to the shore where he was now pumping it full: I followed with the paddles, pole, and hydroscope.

From Police!!! by Hutt, Henry

At first I scarcely noticed them, supposing them to be vast beds of silvery bottom sand glittering under the electric pencil of the hydroscope.

From Police!!! by Hutt, Henry

He knelt for some time longer, watching the fish, before he resigned the hydroscope to me.

From Police!!! by Hutt, Henry

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 Woman in Science With an Introductory Chapter on Woman's Long Struggle for Things of the Mind by Zahm, John Augustine