[ sid-uh-rahyt ]

  1. Also called chalybite. a common mineral, iron carbonate, FeCO3, usually occurring in yellowish to deep-brown cleavable masses: a minor ore of iron.

  2. a meteorite consisting almost entirely of metallic minerals.

Origin of siderite

1570–80, in sense “loadstone”; 1845–50 for def. 1; sider- + -ite1; in obsolete sense, variant of siderites<Latin sidērītēs<Greek sidērī́tēs loadstone

Other words from siderite

  • sid·er·it·ic [sid-uh-rit-ik], /ˌsɪd əˈrɪt ɪk/, adjective

Words Nearby siderite Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use siderite in a sentence

British Dictionary definitions for siderite


/ (ˈsaɪdəˌraɪt) /

  1. Also called: chalybite a pale yellow to brownish-black mineral consisting chiefly of iron carbonate in hexagonal crystalline form. It occurs mainly in ore veins and sedimentary rocks and is an important source of iron. Formula: FeCO 3

  2. a meteorite consisting principally of metallic iron

Derived forms of siderite

  • sideritic (ˌsaɪdəˈrɪtɪk), adjective

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012