noun hy·dro·scope

Definition of hydroscope

  1. :  a device for enabling a person to see an object at a considerable distance below the surface of water by means of a series of mirrors enclosed in a steel tube — compare water glass


less commonly


\-pə̇kəl\ adjective

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Origin and Etymology of hydroscope

International Scientific Vocabulary hydr- + -scope; probably originally formed as Italian idroscopio

Seen and Heard

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to cast off or become cast off

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