molybdenums

Noun

molybdenum (countable and uncountable, plural molybdenums)

1. A chemical element (symbol Mo) with an atomic number of 42: a silvery metal, not found as a free element, used in steel alloys.
   • The metals at preſent amount to 21 ; only 11 of which were known before the year 1730. Their names are gold, ſilver, platinum, mercury, copper, iron, tin, lead, zinc, antimony, biſmuth, arſenic, cobalt, nickel, manganeſe, tungſten, molybdenum, uranium, tellurium, titanium, chromum.1803, “Of Metals”, in George Gleig, editor, Supplement to the Third Edition of the Encyclopædia Britannica, or, A Dictionary of Arts, Sciences, and Miscellaneous Literature, 2nd edition, volume I...
2. A single atom of this element.
   • a quadruple bond between molybdenums