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hematite

[hee-muh-tahyt, hem-uh-]
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noun
  1. a very common mineral, iron oxide, Fe2O3, occurring in steel-gray to black crystals and in red earthy masses: the principal ore of iron.
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Origin of hematite

1535–45; < Latin haematītes bloodstone < Greek haimatī́tēs (lithós) bloodlike (stone). See hemat-, -ite1
Related formshe·ma·tit·ic [hee-muh-tit-ik, hem-uh-] /ˌhi məˈtɪt ɪk, ˌhɛm ə-/, adjective
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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British Dictionary definitions for hematite

hematite

haematite (ˈhɛmətaɪt, ˈhiːm-)

noun
  1. a red, grey, or black mineral, found as massive beds and in veins and igneous rocks. It is the chief source of iron. Composition: iron (ferric) oxide. Formula: Fe 2 O 3 . Crystal structure: hexagonal (rhombohedral)Also called: iron glance
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Derived Formshematitic or haematitic (ˌhɛməˈtɪtɪk, ˌhiː-), adjective

Word Origin

C16: via Latin from Greek haimatitēs resembling blood, from haima blood
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

Word Origin and History for hematite

n.

1540s, haematites, from Middle French hematite (16c.), from Latin haematites, from Greek haimatites lithos "bloodlike stone," from haima (genitive haimatos) "blood" (see -emia). Earlier as emachite (late 14c.).

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Online Etymology Dictionary, © 2010 Douglas Harper

hematite in Science

hematite

[hēmə-tīt′]
  1. A reddish-brown to silver-gray metallic mineral. Hematite occurs as rhombohedral crystals, as reniform (kidney-shaped) crystals, or as fibrous aggregates in igneous, metamorphic, and sedimentary rocks. It is the most abundant ore of iron, and it is usually slightly magnetic. Chemical formula: Fe2O3.
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The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.