berylloid

berylloid
\\ˈberəˌlȯid\ noun (-s)
Etymology: International Scientific Vocabulary beryll- (probably from Latin beryllus) + -oid; from the frequent occurrence of beryl crystals in this form
: a form consisting of a double 12-sided pyramid : the dihexagonal dipyramid

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berylloid Cryst.
(ˈbɛrɪlɔɪd)
[f. L. beryllus, a. Gr. βήρυλλος beryl + -oid.]
A geometrical solid consisting of two twelve-sided pyramids put base to base, as in the beryl.

Useful english dictionary. 2012.

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Look at other dictionaries:

  • Berylloid — Ber yl*loid, n. [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. [1913 Webster] …   The Collaborative International Dictionary of English

  • berylloid — noun a solid consisting of a double twelve sided pyramid …   Wiktionary

  • berylloid — ber·yl·loid …   English syllables

  • beryllium — noun /bəˈrɪliəm/ The chemical element with an atomic number of 4; a light metal with specialist industrial applications. Syn: glucinium, glucinum See Also: beryl, beryllia, beryllide, berylline …   Wiktionary

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