ar·​se·​no·​py·​rite ˌär-sə-nō-ˈpī-ˌrīt How to pronounce arsenopyrite (audio)
: a silver-white mineral consisting of a combined sulfide and arsenide of iron that occurs in prismatic orthorhombic crystals or in masses or grains and that is the principal source of arsenic

Word History


borrowed from German Arsenopyrit, borrowed from New Latin arsenopyrites, from arsenicum arsenic entry 1 + -o- -o- + pyrites pyrites

First Known Use

1854, in the meaning defined above

Time Traveler
The first known use of arsenopyrite was in 1854

Dictionary Entries Near arsenopyrite

Cite this Entry

“Arsenopyrite.” Dictionary, Merriam-Webster, Accessed 12 Jun. 2024.

Kids Definition


ar·​se·​no·​py·​rite ˌärs-ᵊn-ō-ˈpī-ˌrīt How to pronounce arsenopyrite (audio)
: a hard bluish or grayish white mineral consisting of iron, arsenic, and sulfur

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