| 释义 |
hemiˈpyramid Cryst.
[hemi-.]
A figure consisting of two pairs of parallel faces intersecting all three axes in the monosymmetric system (in which four such pairs constitute a pyramid). Hence hemipyˈramidal a., of or pertaining to a hemipyramid.
1854Mayne Expos. Lex., Hemipyramidal..Hemirhombohedral. |