/ (ˌpɒlɪˈsʌlfaɪd) /
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
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Words nearby polysulphide
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Example sentences from the Web for polysulphide
Hence magnesium and sulphur combine under the action of pressure, forming magnesium sulphide and possibly a polysulphide.