Definition of beryllium in English:



mass noun
  • The chemical element of atomic number 4, a hard grey metal.

    • ‘The presence of alloying elements such as beryllium, chromium, silicon, and aluminum modifies the nature of the oxide, making it more tenacious.’
    • ‘Her history included a relatively short period of exposure to a mixture of silica, hard metal, and beryllium.’
    • ‘The most important precipitation-hardening reactions are obtained with beryllium, chromium, boron, nickel, silicon, and zirconium.’
    • ‘Elements such as lead, tellurium, beryllium, chromium, phosphorus, and manganese have little or no effect on the corrosion resistance of coppers and binary copper-zinc alloys.’
    • ‘The reactive elements contained in alloys such as magnesium, strontium, sodium, calcium, beryllium, and titanium are also factors in oxide formation.’

Beryllium is the lightest of the alkaline earth metals, and its chief source is the mineral beryl. It is used in the manufacture of light corrosion-resistant alloys and in windows in X-ray equipment