pyrˈitize or pyrˈitise transitive verb

To convert into, or replace by, pyrites

pyritohēˈdral adjective

pyritohēˈdron noun (pl pyritohēˈdra)

A pentagonal dodecahedron

pyrˈitous adjective

arsenical pyrites

Mispickel

cockscomb pyrites or spear pyrites

A twinned form of marcasite

copper pyrites

Sulphide of copper and iron, chalcopyrite, a mineral very similar to iron pyrites

magnetic pyrites

Pyrrhotite