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- noun a metallic element used in alloys, especially to harden and strengthen steels in high temperature applications, like exhaust valves
- A silvery-white chemical element with atomic number 42. It is hard, malleable, ductile, has a high melting point, and maintains its strength at elevated temperatures. It has about 25 known isotopes, of which 6 are stable. It has various applications in electronics, including is use as an alloying agent, in electrodes and filaments, and in nuclear energy applications. Its chemical symbol is Mo.
- chemical symbolMo