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Bologna stone. In DICTIOUS you will not only get to know all the dictionary meanings for the word
Bologna stone, but we will also tell you about its etymology, its characteristics and you will know how to say
Bologna stone in singular and plural. Everything you need to know about the word
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English
Etymology
Specimens were found near Bologna in the 17th century by Vincenzo Casciarolo.
Noun
Bologna stone (plural Bologna stones)
- (alchemy) The phosphorescent form of baryte.
2013, Marco Piccolino, Galileo's Visions: Piercing the spheres of the heavens by eye and mind:It was concerned with the causes of the phosphorescence of the so-called 'Bologna stone' (a mineral named by the author of the book with the more imposing term of litheosphorus).