Webster's 1828 Dictionary
SIDERITE
n.[L. sideritis; Gr. id. from sidhrov, iron. ] 1. The loadstone; also, iron-wort, a genus of plants; also, the common ground pine
2. In mineralogy, a phosphate of iron.
Webster's 1913 Dictionary
SIDERITE
Sid "er *ite, n. Etym: [L. sideritis loadstone, Gr.
1. (Min. ) (a ) Carbonate of iron, an important ore of iron occuring generally in cleavable masses, but also in rhombohedral crystals. It is of a light yellowish brown color. Called also sparry iron, spathic iron. (b ) A meteorite consisting solely of metallic iron. (c ) An indigo-blue variety of quartz. (d ) Formerly, magnetic iron ore, or loadstone.
2. (Bot. )
Defn: Any plant of the genus Sideritis; ironwort.
New American Oxford Dictionary
siderite
sid er ite |ˈsidəˌrīt ˈsɪdəraɪt | ▶noun 1 a brown mineral consisting of ferrous carbonate, occurring as the main component of some kinds of ironstone or as rhombohedral crystals in mineral veins. 2 a meteorite consisting mainly of nickel and iron. DERIVATIVES sid er it ic |ˌsidəˈritik |adjective ORIGIN late 16th cent. (denoting lodestone ): from Greek sidēros ‘iron ’ + -ite 1 .
Oxford Dictionary
siderite
siderite |ˈsʌɪdərʌɪt, ˈsɪd -| ▶noun 1 [ mass noun ] a brown mineral consisting of ferrous carbonate, occurring as the main component of some kinds of ironstone or as rhombohedral crystals in mineral veins. 2 a meteorite consisting mainly of nickel and iron. DERIVATIVES sideritic adjective ORIGIN late 16th cent. (denoting lodestone ): from Greek sidēros ‘iron ’ + -ite 1 .
The Wordsmith Dictionary