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galactite

noun ga·lac·tite \ gəˈlakˌtīt \
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Definition of galactite

plural -s
: an unidentified soluble stone possibly of calcium nitrate whose milky solution gave rise to many legends and superstitions in medieval times

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Origin and Etymology of galactite

Middle French or Latin; Middle French galactite, from Latin galactites, from Greek galaktitēs (lithos) stone that makes water milky, from galakt-, gala milk

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