hydrophanous

hy·dro·phane

 (hī′drə-fān′)
n.
An opal that is almost opaque when dry but transparent when wet.

hy·droph′a·nous (hī-drŏf′ə-nəs) adj.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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