plural -s
: a mineral Mg3B7O13Cl consisting of a borate and chloride of magnesium that is strongly pyroelectric and occurs in hard glassy crystals and in softer white masses (hardness 7, specific gravity 2.9)

Word History


German borazit, from Medieval Latin borac-, borax + German -it -ite

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Dictionary Entries Near boracite

Cite this Entry

“Boracite.” Dictionary, Merriam-Webster, Accessed 28 May. 2024.

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