[ pʌɪ'rʌɪti:z ]
(also iron ~ ; Mineralogy pyrite )
■ noun a shiny yellow mineral consisting of iron disulphide, occurring as intersecting cubic crystals.
Derivatives
pyritic adjective
pyritize or pyritise verb
Origin
ME (denoting a mineral used for kindling fire): via L. from Gk puritēs 'of fire', from pur 'fire'.