Berylloid definitions

Berylloid

• (n.) A solid consisting of a double twelve-sided pyramid; -- so called because the planes of this form occur on crystals of beryl.
Found on http://thinkexist.com/dictionary/meaning/berylloid/

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Berylloid

Ber'yl·loid noun [ Beryl + - oid .] (Crystallog.) A solid consisting of a double twelve- sided pyramid; -- so called because the planes of this form occur on crystals of beryl.
Found on http://www.encyclo.co.uk/webster/B/41

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