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[pol-ee-suhl-fahyd] /ˌpɒl iˈsʌl faɪd/
noun, Chemistry
a sulfide whose molecules contain two or more atoms of sulfur.
Origin of polysulfide
1840-50; poly- + sulfide Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for polysulfide
  • Competing with silicone caulk are newer high-performance caulks: polysulfide, polyurethane, ethylene copolymer and others.
  • Fertilizers produced include calcium thiosulfate and ammonium polysulfide solutions.
  • polysulfide electrolyte stable but gives low cell voltage.
  • Two-component polysulfide and polyurethane sealants show variable performance, require mixing and curing, and are rarely used.
  • It works based on the electrochemical reaction between sodium and sulfur and the formation of sodium polysulfide.

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