Iron(II) sulfide or ferrous sulfide (Br.E. sulphide) is a chemical compound with the formula FeS. In the oil/gas industry, iron sulfides are often present in a sour system due to reaction between corrosion products and hydrogen sulfide.
A material that conducts (see conduction) electricity poorly or not at all. If a voltage is applied to a dielectric, the atoms in the material arrange themselves in such a way as to oppose the flow of electric current. Glass, wood, and plastic are common dielectrics. (See insulator.)
Editors Contribution(0.00 / 0 votes)Rate this definition: dielectric. Is a type of material that can be polarized by an applied electric field and when placed in an electric field, the electric charges do not flow through the material.. Dielectrics are used a lot in electrical engineering through the use of fibre optics and electronics.