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  2. molybdous vs molybdenum

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molybdous

English

Etymology

molybdenum +? -ous

Adjective

molybdous (not comparable)

  1. (chemistry) Of, pertaining to, or containing molybdenum; specifically designating those compounds in which molybdenum has a lower valence as contrasted with molybdic compounds.

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molybdenum

English

Etymology

From New Latin molybdaenum, from molybdaena (“any of various substances resembling lead”), from Ancient Greek ?????????? (molúbdaina, “a plummet, piece of lead”), from ???????? (mólubdos, “lead; graphite”), from an Anatolian word cognate with Lydian ????????????????????????????? (mariwda, “dark”), from Proto-Indo-European *mork?-iyo-, from a root *mork?- (“dark”); +? -um (“a chemical element”).

Attested since the last quarter of 18th century.

Pronunciation

  • enPR: m?l?b'd?n?m, IPA(key): /m??l?bd?n?m/

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.
  2. A single atom of this element.

Derived terms

Related terms

Translations

See also

  • powellite
  • wulfenite

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