cuproid

cuproid
\\ˈk(y)üˌprȯid\ noun (-s)
Etymology: International Scientific Vocabulary cupr- + -oid; originally formed as German kuproid
crystallog : a solid related to a tetrahedron and having 12 equal triangular faces

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cuproid Cryst.
(ˈkjuːprɔɪd)
[f. L. cupr-um copper + -oid. So called by Haidinger, because the form occurs in the mineral Tetrahedrite, a sulphide of copper and antimony.]
A solid contained under twelve equal triangles, formed by erecting a pyramid on each of the triangular faces of a tetrahedron.
Webster cites Dana.

Useful english dictionary. 2012.

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Look at other dictionaries:

  • Cuproid — Cu proid (k? proid), n. [Cuprum + oid.] (Crystalloq.) A solid related to a tetrahedron, and contained under twelve equal triangles. [1913 Webster] …   The Collaborative International Dictionary of English

  • cuproid — cu·proid …   English syllables

  • copper — 1. noun /ˈkɔp.ə,ˈkɒp.ə,ˈkɑ.pɚ/ a) a reddish brown, malleable, ductile metallic element with high electrical and thermal conductivity, symbol Cu, and atomic number 29. Mum would heat the water in a …   Wiktionary

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