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单词 pseudohexagonal
释义

> as lemmas

pseudohexagonal
pseudohexagonal adj.
Brit. /ˌs(j)uːdə(ʊ)hɛkˈsaɡənl/
,
/ˌs(j)uːdə(ʊ)hɛkˈsaɡn̩l/
,
U.S. /ˌsudoʊˌhɛkˈsæɡən(ə)l/
Crystallography apparently hexagonal in morphology or crystal structure but not actually so; spec. designating a crystal in which the crystal structure simulates the symmetry of the hexagonal system but actually has lower symmetry.
ΚΠ
1885 Amer. Naturalist 19 300 This pseudohexagonal core is surrounded by an external layer of the really hexagonal modification.
1895 N. Story-Maskelyne Crystallogr. vii. §308 Fig. 261 represents a crystal of witherite, and illustrates the pseudo-hexagonal aspect of many crystals in this [orthorhombic] system.
1969 Amer. Mineralogist 54 849 Thin pseudohexagonal flakes or fragments.
1990 C. Pellant Rocks, Minerals & Fossils 89/1 Chlorite... System: Monoclinic. Habit: flaky, pseudohexagonal crystals, massive.
extracted from pseudo-comb. form
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