- cuproid
- \\ˈk(y)üˌprȯid\ noun
(-s)
Etymology: International Scientific Vocabulary cupr- + -oid; originally formed as German kuproidcrystallog : 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.