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hydrophane

American  
[hahy-druh-feyn] / ˈhaɪ drəˌfeɪn /

noun

  1. a partly translucent variety of opal, which becomes more translucent or transparent when immersed in water.


hydrophane British  
/ ˈhaɪdrəʊˌfeɪn, haɪˈdrɒfənəs /

noun

  1. a white partially opaque variety of opal that becomes translucent in water

"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

Derived Forms

Etymology

Origin of hydrophane

First recorded in 1775–85; hydro- 1 + -phane ( def. )

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

A fine quality of quartz amethyst has been obtained, and also hydrophane, known for its peculiar property of becoming transparent when immersed in water.

From Rambles in the Islands of Corsica and Sardinia with Notices of their History, Antiquities, and Present Condition. by Forester, Thomas

The fifth variety in order of value, is that known as the "hydrophane," which has an interesting characteristic in becoming transparent when immersed in water, and only then.

From The Chemistry, Properties and Tests of Precious Stones by Mastin, John

It was milk-white, and became translucent in water, like that beautiful variety of opal, the hydrophane.

From White Shadows in the South Seas by O'Brien, Frederick

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