单词 | subcrystalline |
释义 | subcrystallineadj. Chiefly Geology. Chiefly of rocks and other natural materials: imperfectly or incompletely crystalline; semi-crystalline. ΚΠ 1803 Curtis's Bot. Mag. 17 688 Furnished on each side the base of their ungues with a tuberculated, subcrystalline, glandular excrescence. 1815 R. Bakewell Introd. Geol. (ed. 2) v. 102 The following arrangement includes in the same class the lower secondary rocks... 3 Subcrystalline lime-stone, metalliferous. 1876 D. Page Adv. Text-bk. Geol. (ed. 6) v. 105 The trachytes are rough-grained subcrystalline varieties of felspathic lava. 1934 T. H. Macbride & G. W. Martin Myxomycetes 122 Middle layer of peridium subcrystalline; columella usually lacking..D[iderma] trevelyani. 1995 Athenian Agora 27 56 The blocks are carved from a distinctive form of limestone that resembles travertine. Hard and subcrystalline in structure, it is marked occasionally by fossils. This is a new entry (OED Third Edition, June 2012; most recently modified version published online March 2022). < adj.1803 |
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