Library / English Dictionary

    MOLYBDENUM

    Pronunciation (US): Play  (GB): Play

     I. (noun) 

    Sense 1

    Meaning:

    A polyvalent metallic element that resembles chromium and tungsten in its properties; used to strengthen and harden steelplay

    Synonyms:

    atomic number 42; Mo; molybdenum

    Classified under:

    Nouns denoting substances

    Hypernyms ("molybdenum" is a kind of...):

    metal; metallic element (any of several chemical elements that are usually shiny solids that conduct heat or electricity and can be formed into sheets etc.)

    Holonyms ("molybdenum" is a substance of...):

    molybdenite (a mineral resembling graphite that is valued as the chief source of molybdenum and its compounds)

    Credits

     Context examples: 

    This protein is comprised of the N-terminal half of the histone-lysine N-methyltransferase MLL protein, including the AT hook DNA binding domain and the DNA methyltransferase domain, fused with the C-terminus of the gephyrin protein including the presumed tubulin-binding site and a domain homologous to the E. coli molybdenum cofactor biosynthesis protein.

    (MLL/GPHN Fusion Protein, NCI Thesaurus)

    In this context, the chemical properties of molybdenum play a key role because, as it is an iron-loving element, most of the Earth's molybdenum is located in the core.

    (Moon’s Formation Brought Water to Earth, The Titi Tudorancea Bulletin)

    This allele, which encodes gephyrin protein, plays a role in both protein-cytoskeleton interactions and biosynthesis of the molybdenum cofactor.

    (GPHN wt Allele, NCI Thesaurus)

    Scientists show that most of the molybdenum in Earth's mantle was supplied by the protoplanet Theia, whose collision with Earth 4.4 billion years ago led to the formation of the Moon.

    (Moon’s Formation Brought Water to Earth, The Titi Tudorancea Bulletin)

    However, since a large part of the molybdenum in Earth's mantle originates from the outer solar system, this means that Theia itself also originated from the outer solar system.

    (Moon’s Formation Brought Water to Earth, The Titi Tudorancea Bulletin)

    The molybdenum which is accessible today in the Earth's mantle, therefore, originates from the late stages of Earth's formation, while the molybdenum from earlier phases is entirely in the core.

    (Moon’s Formation Brought Water to Earth, The Titi Tudorancea Bulletin)

    The measurements show that the molybdenum isotopic composition of the Earth lies between those of the carbonaceous and non-carbonaceous meteorites, demonstrating that some of Earth's molybdenum originated in the outer solar system.

    (Moon’s Formation Brought Water to Earth, The Titi Tudorancea Bulletin)

    The molybdenum isotopes allow us to clearly distinguish carbonaceous and non-carbonaceous material, and as such represent a 'genetic fingerprint' of material from the outer and inner solar system, explains Dr. Gerrit Budde of the Institute of Planetology in Münster and lead author of the study.

    (Moon’s Formation Brought Water to Earth, The Titi Tudorancea Bulletin)


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