a yellowish to brownish, semihard
mineral, iron carbonate, FeCO3
, that is a valuable
ore of iron
a meteorite consisting chiefly of iron
Webster’s New World College Dictionary, 4th Edition. Copyright © 2010 by
Houghton Mifflin Harcourt. All rights reserved.
Word origin of 'siderite'Ger siderit < L siderites, lodestone < Gr sideritēs < sidēros, iron: Early ModE siderite, lodestone < L