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molybdenum
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molybdenum
n.
(Mo) graphite-like mineral of the chromium group used to strengthen and harden steel (Chemistry)
| English Wikipedia - The Free Encyclopedia | Download this dictionary |
Molybdenum
Molybdenum is a chemical element with symbol Mo and atomic number 42. The name is from Neo-Latin molybdaenum, from Ancient Greek , meaning lead, since its ores were confused with lead ores. Molybdenum minerals have been known throughout history, but the element was discovered (in the sense of differentiating it as a new entity from the mineral salts of other metals) in 1778 by Carl Wilhelm Scheele. The metal was first isolated in 1781 by Peter Jacob Hjelm.
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| WordNet 2.0 | Download this dictionary |
molybdenum
Noun
1. a polyvalent metallic element that resembles chromium and tungsten in its properties; used to strengthen and harden steel
(synonym) Mo, atomic number 42
(hypernym) metallic element, metal
(substance-holonym) molybdenite
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molybdenum
n.
molybden
| Webster's Revised Unabridged Dictionary (1913) | Download this dictionary |
Molybdenum
(n.)
A rare element of the chromium group, occurring in nature in the minerals molybdenite and wulfenite, and when reduced obtained as a hard, silver-white, difficulty fusible metal. Symbol Mo. Atomic weight 95.9.
A rare element of the chromium group, occurring in nature in the minerals molybdenite and wulfenite, and when reduced obtained as a hard, silver-white, difficulty fusible metal. Symbol Mo. Atomic weight 95.9.
Webster's Revised Unabridged Dictionary (1913), edited by Noah Porter. About
