Crossword-Solution: HEMIHEDRAL
Dictionary
| Word | Word Type | Definition |
|---|---|---|
| Hemihedral | a. | 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. |
We have 2 clues for the answer “HEMIHEDRAL”
| Clue | Answers |
|---|---|
| CRYSTAL having half number of planes given by complete symmetry | 1 answer |
| CRYSTAL form | 10 answers |
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Dermatological complaint
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Hint 1 meaning
An inflammatory disease of the skin, characterized by the
presence of redness and itching, an eruption of small vesicles, and the
discharge of a watery exudation, which often dries up, leaving the skin
covered with crusts; -- called also tetter, milk crust, and salt rheum.
Hint 2 anagram
AMCEZE
Hint 3 another clue
eruption
10 +1
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Sentences with HEMIHEDRAL (5)
Etym: [Hemi- + holohedral.] (Crystallog.) Defn: Presenting hemihedral forms, in which half the sectants have the full number of planes.
Etym: [Holo- + hemihedral.] (Crystallog.) Defn: Presenting hemihedral forms, in which all the sectants have halt the whole number of planes.
Note: In crystallography, the regular tetrahedron is regarded as the hemihedral form of the regular octahedron.
The occurrence of hemihedral faces was considered by Pasteur to be a sufficient criterion for an optically active substance.
These two systems (the monoclinic and anorthic) were, however, considered by Weiss to be only hemihedral or tetartohedral modifications of the orthorhombic system, and they were not definitely established until 1835, when the optical characters of the crystals were found to be distinct.