• synonyms

molybdenum disulfide

noun Chemistry.
  1. a black crystalline powder, MoS2, insoluble in water, used as a lubricant and as a hydrogenation catalyst.
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Origin of molybdenum disulfide

First recorded in 1930–35
Also called molybdenum sulfide.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018