molybdenum
a silver-white metallic element, used as an alloy with iron in making hard, high-speed cutting tools. Symbol: Mo; atomic weight: 95.94; atomic number: 42; specific gravity: 10.2.
Origin of molybdenum
1Words Nearby molybdenum
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2024
How to use molybdenum in a sentence
Building on this prior work, the researchers in the most recent study also chose molybdenum disulfide for their channel material and a carbon-based gate.
Moore’s Law: Scientists Just Made a Graphene Transistor Gate the Width of an Atom | Jason Dorrier | March 13, 2022 | Singularity HubRen also points out that 2D materials, like molybdenum disulfide, are still pricey and manufacturing high-quality stuff at scale is a challenge.
Moore’s Law: Scientists Just Made a Graphene Transistor Gate the Width of an Atom | Jason Dorrier | March 13, 2022 | Singularity HubFor instance, the molybdenum that had been crucial to creating the idea of “whiffs,” Slotznick and co-authors think, actually came from volcanoes.
Ancient rocks hold the story of Earth’s first breath of oxygen | Rahul Rao | January 10, 2022 | Popular-ScienceOther elements, such as molybdenum, rhenium, and sulfur, show changes too—though scientists aren’t always sure what drives those changes.
Ancient rocks hold the story of Earth’s first breath of oxygen | Rahul Rao | January 10, 2022 | Popular-ScienceThe trick was to coat the surface of the EUV mirrors with alternating layers of silicon and molybdenum, each only a few nanometers thick.
Inside the machine that saved Moore’s Law | Clive Thompson | October 27, 2021 | MIT Technology Review
Iron and copper ores frequently contain molybdenum, sometimes in quantity; consequently it is met with in slags and pig-iron.
A Textbook of Assaying: For the Use of Those Connected with Mines. | Cornelius Beringer and John Jacob BeringerAll molybdenum compounds are converted into the trioxide by boiling with nitric acid.
A Textbook of Assaying: For the Use of Those Connected with Mines. | Cornelius Beringer and John Jacob BeringerVanadium is white, and when its surface is polished, it resembles silver or molybdenum more than any other metal.
A Dictionary of Arts, Manufactures and Mines | Andrew UreWe noted a similar close resemblance between the positive strontium and the negative molybdenum.
Occult Chemistry | Annie Besant and Charles W. LeadbeaterIt consumes a lot in its own steel industry, even using manganese as a substitute for scarcer alloys like nickel and molybdenum.
East-West Trade Trends | Harold E. Stassen
British Dictionary definitions for molybdenum
/ (mɒˈlɪbdɪnəm) /
a very hard ductile silvery-white metallic element occurring principally in molybdenite: used mainly in alloys, esp to harden and strengthen steels. Symbol: Mo; atomic no: 42; atomic wt: 95.94; valency: 2–6; relative density: 10.22; melting pt: 2623°C; boiling pt: 4639°C
Origin of molybdenum
1Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Scientific definitions for molybdenum
[ mə-lĭb′də-nəm ]
A hard, silvery-white metallic element that resists corrosion and retains its strength at high temperatures. It is used to harden and toughen steel and to make high-temperature wiring. Molybdenum is an essential trace element in plant metabolism. Atomic number 42; atomic weight 95.96; melting point 2,623°C; boiling point 4,639°C; specific gravity 10.22 (at 20°C); valence 2, 3, 4, 5, 6. See Periodic Table.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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