Definitions

from The Century Dictionary.

  • noun In crystallography, a solid related to a tetrahedron, and contained under twelve equal triangles. It is the hemihedral form of the tetragonal trisoctahedron or trapezohedron.

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

  • noun (Crystalloq.) A solid related to a tetrahedron, and contained under twelve equal triangles.

Etymologies

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Examples

  • Whether the more excited was zincoid or cuproid depended on the substance and its molecular condition.

    Response in the Living and Non-Living Jagadis Chandra Bose 1897

  • _ -- Action current from more excited to less excited -- cuproid change in the excited -- e.g. fresh muscle and nerve, stale retina.

    Response in the Living and Non-Living Jagadis Chandra Bose 1897

  • Stimulation of the uninjured end, approximating it to the condition of the injured, might then be said to induce a cuproid change.

    Response in the Living and Non-Living Jagadis Chandra Bose 1897

  • The electric change produced in a normal nerve by stimulation may therefore be expressed by saying that there has been a negative variation, or that there was a current of action from the more excited to the less excited, or that stimulation has produced a cuproid change.

    Response in the Living and Non-Living Jagadis Chandra Bose 1897

  • The uninjured end is therefore comparable to the zinc in a voltaic cell (is zincoid), the injured being copper-like or cuproid. [

    Response in the Living and Non-Living Jagadis Chandra Bose 1897

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