pyr·rho·tite 
(pĭrə-tīt′) also pyr·rho·tine (-tīn′)
(pĭrə-tīt′) also pyr·rho·tine (-tīn′)n.
A brownish-bronze iron sulfide mineral, FeS, characterized by weak magnetic properties and used as an iron ore and in the manufacture of sulfuric acid. Also called magnetic pyrites.
[Alteration (influenced by -ITE1) of German Pyrrhotin, from Greek purrotēs, redness, from purros, fiery, from pūr, fire; see paəw in the Appendix of Indo-European roots.]
- irrespective of
- irrespirable
- irresponsibility
- irresponsible
- irresponsibleness
- irresponsibly
- irresponsive
- irresponsively
- irresponsiveness
- irretrievability
- irretrievable
- irretrievableness
- irretrievably
- irreverence
- irreverent
- irreverently
- irreversibility
- irreversible
- irreversibleness
- irreversibly
- irrevocability
- irrevocable
- irrevocableness
- irrevocably
- irrigable