Also found in: Thesaurus, Encyclopedia, Wikipedia.
Switch to new thesaurus
|Noun||1.||iron pyrite - a common mineral (iron disulfide) that has a pale yellow color|
atomic number 34, Se, selenium - a toxic nonmetallic element related to sulfur and tellurium; occurs in several allotropic forms; a stable grey metallike allotrope conducts electricity better in the light than in the dark and is used in photocells; occurs in sulfide ores (as pyrite)
mineral - solid homogeneous inorganic substances occurring in nature having a definite chemical composition