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[mass noun] The chemical element of atomic number 5, a non-metallic solid.→ boro-
- ‘They spray boron and energetic nitrogen atoms onto a clean, heated tungsten surface, held at 250 to 500 volts, in an ultrahigh vacuum.’
- ‘These rare coloured stones are highly treasured; their coloration comes from traces of elements such as boron and nitrogen or from structural flaws in the crystal lattice.’
- ‘The smaller element may be a nonmetallic element, such as boron, carbon, nitrogen, or silicon.’
- ‘This product is a laundry aid containing sodium, boron, oxygen, and water.’
- ‘In certain cases, small metallic atoms, like boron and beryllium, may enter into restricted interstitial solid solutions.’
- ‘Zinc is in solid solution; boron, titanium and zirconium are seldom added in amounts sufficient to produce visible compounds.’
- ‘The mineral elements most likely to be deficient in vineyards are nitrogen, potassium, phosphorus, zinc, boron, iron, manganese, and magnesium.’
- ‘Each layer is doped with tiny amounts of different impurities, usually phosphorus and boron.’
- ‘Electrons from the n-type half are drawn to the p-type half because of the way that phosphorus and boron bond with silicon.’
- ‘Diffusion methods modify the chemical composition of the surface with hardening species such as carbon, nitrogen, or boron.’
- ‘It was not until 1807, however, that Sir Humphrey Davy identified boron as a chemical element.’
- ‘Nitrogen, phosphorus, potassium, sulphur and boron have been found to be important in Zambia.’
- ‘Trace minerals that are already more than adequate in most diets include phosphorus, iodine, manganese, chloride, molybdenum and boron.’
- ‘Those with less than an octet are often called electron deficient and are typical of certain elements with an odd number of electrons, such as boron and nitrogen.’
- ‘Nitrogen and boron are increasingly used in steels in small but significant concentrations.’
- ‘Besides hydrogen and its isotope deuterium, researchers use the isotopes of boron, oxygen, nitrogen and carbon.’
- ‘The immobile nutrients are iron, sulfur, calcium, manganese, copper, zinc, boron, molybdenum, and chlorine.’
- ‘Grain refinement by titanium, boron and zirconium additions has only a limited effect on mechanical properties.’
- ‘The most widely used grain refiners are master alloys of titanium, or of titanium and boron, in aluminum.’
- ‘In addition, soy also contains magnesium and boron, which are important co-factors of calcium for bone health.’
Early 19th century: from borax, on the pattern of carbon (which it resembles in some respects).
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