1. A brownish iron sulphide mineral (FeS) having weak magnetic properties
   - pyrrhotite, pyrrhotine

Type of: mineral

• semiautomatic firearm
• semiautomatic pistol
• semibreve
• semicentenary
• semicentennial
• semicircle
• semicircular
• semicircular arch
• semicircular canal
• semicolon
• semicoma
• semicomatose
• semiconducting
• semiconducting material
• semiconductive
• semiconductor
• semiconductor device
• semiconductor diode
• semiconductor unit
• semiconscious
• semiconsciousness
• semidark
• semidarkness
• semidesert
• semidetached