| slovo | definícia |
Hemihedral
(gcide) | Hemihedral \Hem`i*he"dral\, a. [Hemi- + Gr. ? seat, base, fr. ?
to sit.] (Crystallog.)
Having half of the similar parts of a crystals, instead of
all; consisting of half the planes which full symmetry would
require, as when a cube has planes only on half of its eight
solid angles, or one plane out of a pair on each of its
edges; or as in the case of a tetrahedron, which is
hemihedral to an octahedron, it being contained under four of
the planes of an octahedron. -- Hem`i*he"dral*ly, adv.
[1913 Webster] |
| | podobné slovo | definícia |
Hemihedral
(gcide) | Hemihedral \Hem`i*he"dral\, a. [Hemi- + Gr. ? seat, base, fr. ?
to sit.] (Crystallog.)
Having half of the similar parts of a crystals, instead of
all; consisting of half the planes which full symmetry would
require, as when a cube has planes only on half of its eight
solid angles, or one plane out of a pair on each of its
edges; or as in the case of a tetrahedron, which is
hemihedral to an octahedron, it being contained under four of
the planes of an octahedron. -- Hem`i*he"dral*ly, adv.
[1913 Webster] |
Hemihedrally
(gcide) | Hemihedral \Hem`i*he"dral\, a. [Hemi- + Gr. ? seat, base, fr. ?
to sit.] (Crystallog.)
Having half of the similar parts of a crystals, instead of
all; consisting of half the planes which full symmetry would
require, as when a cube has planes only on half of its eight
solid angles, or one plane out of a pair on each of its
edges; or as in the case of a tetrahedron, which is
hemihedral to an octahedron, it being contained under four of
the planes of an octahedron. -- Hem`i*he"dral*ly, adv.
[1913 Webster] |
Holohemihedral
(gcide) | Holohemihedral \Hol`o*hem`i*he"dral\, a. [Holo- + hemihedral.]
(Crystallog.)
Presenting hemihedral forms, in which all the sectants have
halt the whole number of planes. --Dana.
[1913 Webster] |
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