= lodestone, n. 1.
单词 | θ6743 |
释义 | the world > the earth > minerals > types of mineral > oxides and hydroxides > [noun] > spinel group AB2 O4 > magnetite (9) quick irona1398 = lodestone, n. 1. magnet1440 Mineralogy. A kind of rock that naturally attracts iron; lodestone (magnetite). Obsolete. lodestone?1518 Magnetic oxide of iron; also, a piece of this used as a magnet. magnetes1579 = magnet, n. 1. osmund stone1613 (apparently) a kind of (magnetic) ironstone (cf. osmond, n.). magnetite1851 A strongly magnetic oxide of ferrous and ferric iron, Fe3O4, of the spinel group, which occurs as black or brownish-black crystals of the cubic… Heraclean stone1883 Pertaining to Heracles. Heraclean stone (lapis Heraclēus, λίθος Ἡρακλεία): the magnet, so called from its great attractive power. titanomagnetite1895 A variety of magnetite containing some titanium instead of iron. coulsonite1937 A vanadian magnetite, found originally in India. |
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