Definition of manganese in English:



  • 1[mass noun] The chemical element of atomic number 25, a hard grey metal of the transition series. Manganese is an important component of special steels and magnetic alloys.

    • ‘And it provided vital information on lime requirement, phosphorus, potash, magnesium, copper, manganese and zinc.’
    • ‘The oxygens which were originally attached to the manganese are still attached in the neutral complex.’
    • ‘They include magnesium, calcium, iron, sulfur, molybdenum, boron, zinc, copper and manganese.’
    • ‘Daily intake of small amounts of manganese is needed for growth and good health in children.’
    • ‘These changes were associated with large increases in phosphorus, potassium, zinc, iron, manganese, and copper.’
    • ‘Cobalt, nickel and manganese are metals with iron-like properties.’
    • ‘Also, urinalysis showed high levels of potassium, manganese, and calcium.’
    • ‘Water from some sites contained manganese, often a component of the mineral-rich water discharged from vents.’
    • ‘These alloys usually contain manganese as an impurity because wrought metal scrap is used in preparing them.’
    • ‘The mineral elements most likely to be deficient in vineyards are nitrogen, potassium, phosphorus, zinc, boron, iron, manganese, and magnesium.’
    • ‘Less abundant elements, which are equally necessary for life, include calcium, manganese, iron, and iodine.’
    • ‘Most Nebraska soils contain sufficient levels of potassium, magnesium, manganese, iron and sulfur for sunflower levels.’
    • ‘Uptake of aluminum, iron and manganese has not been as extensively studied in algae.’
    • ‘The list includes sodium, potassium, calcium, magnesium, manganese, iron, cobalt, copper, zinc, and molybdenum.’
    • ‘Groundwater also contains salts of calcium, magnesium, iron, and manganese.’
    • ‘Nitrates and trace metals, such as iron, manganese, copper, and zinc, should be kept to a minimum.’
    • ‘Offshore oil and gold are exploited, and there are deposits of iron ore, copper, manganese, uranium, silica, and titanium.’
    • ‘Unlike metals such as iron, copper, magnesium, manganese, and nickel, gold has no natural biological role.’
    • ‘By far the most important use of manganese is in the production of alloys, primarily steel alloys.’
    • ‘Carbon-manganese steels are in general use for the rails; too much carbon makes the steel brittle, too much manganese makes it hard to weld.’
    1. 1.1The black dioxide of manganese as an industrial raw material or additive, especially in glass-making.


Late 17th century: via French from Italian manganese, alteration of medieval Latin magnesia (see magnesia).