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Pronunciation varies by accent · noun
(mineralogy) A semitranslucent variety of opal that becomes translucent or transparent on immersion in water..
Use hydrophane when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Hydrophane means (mineralogy) A semitranslucent variety of opal that becomes translucent or transparent on immersion in water..
The closest synonym depends on the sentence and intended sense.
The opposite depends on the specific sense.
Use hydrophane where its definition matches the intended context.
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