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beryllonite

[buh-ril-uh-nahyt]
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noun
  1. a mineral, sodium beryllium phosphate, NaBePO4, occurring in colorless or light-yellow crystals, sometimes used as a gemstone.
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Origin of beryllonite

1885–90; < Greek bērýll(i)on (bḗryll(os) beryl + -ion diminutive suffix) + -ite1
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018