polysulphide

/ (ˌpɒlɪˈsʌlfaɪd) /

noun

any sulphide of a metal containing divalent anions in which there are chains of sulphur atoms, as in the polysulphides of sodium, Na 2 S 2, Na 2 S 3, Na 2 S 4, etc

Example sentences from the Web for polysulphide