from The American Heritage® Dictionary of the English Language, 5th Edition.

  • noun A transparent to translucent glassy mineral, essentially aluminum beryllium silicate, Be3Al2Si6O18, occurring in hexagonal prisms and constituting the chief source of beryllium. Transparent varieties in white, green, blue, yellow, or pink are valued as gems.

from The Century Dictionary.

  • noun A colorless, bluish, pinkish, yellow, or more commonly green mineral, occurring in hexagonal prisms.

from the GNU version of the Collaborative International Dictionary of English.

  • noun (Min.) A mineral of great hardness, and, when transparent, of much beauty. It occurs in hexagonal prisms, commonly of a green or bluish green color, but also yellow, pink, and white. It is a silicate of aluminum and beryllium. The aquamarine is a transparent, sea-green variety used as a gem. The emerald is another variety highly prized in jewelry, and distinguished by its deep color, which is probably due to the presence of a little oxide of chromium.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun uncountable, mineralogy A mineral of pegmatite deposits, often used as a gemstone.
  • noun countable An example of the mineral beryl.
  • noun uncountable A dull blue colour.
  • adjective Of a dull blue colour.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • noun the chief source of beryllium; colored transparent varieties are valued as gems


from The American Heritage® Dictionary of the English Language, 4th Edition

[Middle English, from Old French, from Latin bēryllus, from Greek bērullos, from bērullion, from Prakrit veruliya, from Pali veḷuriya; perhaps akin to Tamil veḷiru or viḷar, to whiten, become pale.]

from Wiktionary, Creative Commons Attribution/Share-Alike License

Ultimately from Ancient Greek βήρυλλος (berullos, "beryl").



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  • Long he watched the wonders, ringed with lovely perils,

    Watched the apples gleam

    In the sleepy thunders on the beryls,

    Then he breathed his dream:

    “Bloody lands and flaming seas and cloudy slaughter,

    Hateful fogs unfurled,

    Steely horror, shaming sky and water,

    These have wreathed the world.

    - Ridgely Torrence, 'The Apples'.

    September 23, 2009