Meaning of beryllonite

be•ryl•lon•ite

Pronunciation: (bu-ril'u-nīt"), [key]
— n.
  1. a mineral, sodium beryllium phosphate, NaBePO, occurring in colorless or light-yellow crystals, sometimes used as a gemstone.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.