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A brass-colored mineral, FeS2, occurring widely and used as an iron ore and in producing sulfur dioxide for sulfuric acid. Also called fool's gold, iron pyrites.

[Middle English perides, pirite, from Old French pirite, from Latin pyrītēs, flint; see pyrites.]

py·rit′ic (-rĭt′ĭk), py·rit′i·cal (-ĭ-kəl) adj.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


(Minerals) a yellow mineral, found in igneous and metamorphic rocks and in veins. It is a source of sulphur and is used in the manufacture of sulphuric acid. Composition: iron sulphide. Formula: FeS2. Crystal structure: cubic. Also called: iron pyrites or pyrites Nontechnical name: fool's gold
[C16: from Latin pyrites flint, from Greek puritēs (lithos) fire (stone), that is, capable of withstanding or striking fire, from pur fire]
pyritic, pyˈritous adj
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(ˈpaɪ raɪt)

also pyrites

a brass-yellow mineral, iron sulfide, FeS2.
Also called iron pyrites, iron pyrite.
[1560–70; < Latin pyrītēs < Greek pyritēs, n. use of adj.: of fire, so called because it produces sparks when struck]
py•rit•ic (paɪˈrɪt ɪk, pə-) py•rit′i•cal, adj.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.


A silver to yellow, metallic mineral consisting of iron and sulfur. Pyrite often crystallizes in cubes or octahedrons but also occurs as shapeless masses of grains. It is used as a source of iron and in making sulfur dioxide. Because of its shiny look and often yellow color, it is sometimes mistaken for gold and for this reason is also called fool's gold.
The American Heritage® Student Science Dictionary, Second Edition. Copyright © 2014 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.pyrite - a common mineral (iron disulfide) that has a pale yellow colorpyrite - a common mineral (iron disulfide) that has a pale yellow color
atomic number 34, Se, selenium - a toxic nonmetallic element related to sulfur and tellurium; occurs in several allotropic forms; a stable grey metallike allotrope conducts electricity better in the light than in the dark and is used in photocells; occurs in sulfide ores (as pyrite)
mineral - solid homogeneous inorganic substances occurring in nature having a definite chemical composition
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.


nEisen- or Schwefelkies m, → Pyrit m
Collins German Dictionary – Complete and Unabridged 7th Edition 2005. © William Collins Sons & Co. Ltd. 1980 © HarperCollins Publishers 1991, 1997, 1999, 2004, 2005, 2007
References in periodicals archive ?
Two residents of Kara-Balta town of the Chui region found mineral pyrite, Turmush reports.
"Despite the fact the rocks are partially weathered, abundant sulfides (dominantly pyrite) can be found.
"Of the only five drill holes previously completed on Alba's Limerick project, one drill hole intercepted six metres of semi-massive and disseminated pyrite within the target limestone, including a two-metre mineralised interval containing zinc.
BY TREVOR QUINN A GRANDFATHER whose home is crumbling due to the pyrite scandal said people may chain themselves to railings to protest over funding.
The analyst cites Royal Gold's commissioning of the Pyrite Leach Project at Penasquito and the increasing production through calendar 2019 at Cortez Crossroads as positives, but notes that its stock now trades above the overall market-weighted average of its royalty/streaming peers.
Various diagenetic features modified the Kawagarh Formation including compaction, dolomitization, dissolution, pyrite precipitation, cementation and spar filled fractures representing meteoric to marine phreatic with mixing zone and burial diagenetic environments.
Another interesting mineral that is found in the northern areas of Pakistan is known as pyrite.
Weathering induces spatially extensive or discontinuous heterogeneities such as fractures [9-11] and uncompacted sand layers [9], or changes to pore water chemistry and alkalinity, pyrite oxidation, and sulfur state change [6], and changes in other redox proxies such as Ce, Mn, and U [12-16].