• synonyms


[ ahr-suh-noh-pahy-rahyt, ahr-sen-uh- ]
/ ˌɑr sə noʊˈpaɪ raɪt, ɑrˌsɛn ə- /


a common mineral, iron arsenic sulfide, FeAsS, occurring in silver-white to steel-gray crystals or masses: an ore of arsenic.

Nearby words

arseniuretted hydrogen, arseno, arseno group, arseno-, arsenolite, arsenopyrite, arsenous, arsenous acid, arsey, arshin, arsine

Origin of arsenopyrite

First recorded in 1880–85; arseno- + pyrite
Also called mispickel. Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for arsenopyrite


/ (ˌɑːsɪnəʊˈpaɪraɪt, ɑːˌsɛnə-) /


a white or grey metallic mineral consisting of a sulphide of iron and arsenic that forms monoclinic crystals with an orthorhombic shape: an ore of arsenic. Formula: FeAsSAlso called: mispickel
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