a soft, graphitelike mineral, molybdenum sulfide, MoS2, occurring in foliated masses or scales: the principal ore of molybdenum.

Nearby words

  1. moluccas,
  2. molvi,
  3. moly,
  4. molybdate,
  5. molybdate orange,
  6. molybdenosis,
  7. molybdenous,
  8. molybdenum,
  9. molybdenum disulfide,
  10. molybdenum trioxide

Origin of molybdenite

1790–1800; obsolete molybden(a) molybdenum + -ite1 Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for molybdenite

British Dictionary definitions for molybdenite



a soft grey mineral consisting of molybdenum sulphide in hexagonal crystalline form with rhenium as an impurity: the main source of molybdenum and rhenium. Formula: MoS 2
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

Science definitions for molybdenite



A soft, lead-gray hexagonal mineral that is the principal ore of molybdenum. It occurs as sheetlike masses in pegmatites and in areas where contact metamorphism has taken place. Chemical formula: MoS2.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.