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hydroscope

American  
[hahy-druh-skohp] / ˈhaɪ drəˌskoʊp /

noun

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

hydroscope British  
/ ˈhaɪdrəˌskəʊp, ˌhaɪdrəˈskɒpɪk /

noun

  1. any instrument for making observations of underwater objects

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Other Word Forms

  • hydroscopic adjective
  • hydroscopical adjective
  • hydroscopicity noun

Etymology

Origin of hydroscope

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

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.