MOLYBDENUM

molybdenum, Mo, atomic number

(noun) a polyvalent metallic element that resembles chromium and tungsten in its properties; used to strengthen and harden steel

Source: WordNet® 3.1

Etymology

Noun

molybdenum (countable and uncountable, plural molybdenums or molybdena)

A chemical element (symbol Mo) with an atomic number of 42: a silvery metal, not found as a free element, used in steel alloys.

A single atom of this element.

Source: Wiktionary

Mol`yb*de"num, n. Etym: [NL.: cf. F. molybdène. See Molybdena.] (Chem.)

Definition: 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.

Source: Webster’s Unabridged Dictionary 1913 Edition

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