marcasite
nounUK /ˈmɑːkəsʌɪt/ · US /ˈmɑɹ.kə.sɑɪ̯t/
Etymology From Medieval Latin marchasita et al., from Arabic مَرْقَشِيتَا (marqašītā).
1
Chemistry, Geography, Geology, Mineralogy, Natural sciences, Physical sciences The orthorhombic form of iron disulfide, FeS₂, occurring as yellow crystals.
2
Jewelry, Lifestyle Pyrite.
3
Historical Any of various metal sulfides, usually iron sulfide minerals.
- If he wants to speak as a physician, however, he must say, this marcasite is the man's disease, hence it will cure him.1999, Paracelsus, “Opus Paramirum”, in Nicholas Goodrick-Clarke, transl., Essential Readings, North Atlantic Books, page 95:
- Derived terms
- golden marcasite, marcasitic
- Related terms
- pyrite