Definition of beryl
: a mineral consisting of a silicate of beryllium and aluminum of great hardness that occurs in colorless hexagonal prisms when pure and in various colors (as green, blue, yellow, or pink) when not pure, that is valued as a source of gems, and that is the principal source of beryllium
Origin and Etymology of beryl
Middle English, from Middle French beril, from Latin beryllus, from Greek bēryllos, back-formation from bēryllion beryl, of Indo-Aryan origin; akin to Prakrit verulia, veluriya beryl
First Known Use: 13th century
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