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Definitions of boron

  1. a trivalent metalloid element; occurs both in a hard black crystal and in the form of a yellow or brown powder Scrapingweb Dictionary DB
  2. A nonmetallic element occurring abundantly in borax. It is reduced with difficulty to the free state, when it can be obtained in several different forms; viz., as a substance of a deep olive color, in a semimetallic form, and in colorless quadratic crystals similar to the diamond in hardness and other properties. It occurs in nature also in boracite, datolite, tourmaline, and some other minerals. Atomic weight 10.9. Symbol B. Webster Dictionary DB
  3. Boron. A trace element with the atomic symbol B, atomic number 5, and atomic weight 10.81. Boron-10, an isotope of boron, is used as a neutron absorber in BORON NEUTRON CAPTURE THERAPY. Medical Dictionary DB
  4. A non-metallic triad element, symbol B. atomic weight 11; occurs as a hard crystalline mass or as a brown powder; with oxygen it forms boric acid. A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.
  5. The elementary base of boracic acid. Nuttall's Standard dictionary of the English language. By Nuttall, P.Austin. Published 1914.
  6. In chem., one of the elementary substances, the base of boracic acid. Etymological and pronouncing dictionary of the English language. By Stormonth, James, Phelp, P. H. Published 1874.
  7. A nonmetallic element occurring abundantly in borax. It is reduced with difficulty to the free state, when it can be obtained in several different forms; viz., as a substance of a deep olive color, in a semimetallic form, and in colorless quadratic crystals similar to the diamond in hardness and other properties. It occurs in nature also in boracite, datolite, tourmaline, and some other minerals. Atomic number 5. Atomic weight 10.81. Symbol B. dictgcide_fs
  8. b[=o]'ron, n. a simple non-metallic element present in borax and boracic acid, obtained in crystals which resemble diamonds. [See BORAX.] gutenberg.org/ebooks/37683
  9. A simple substance, the basis of boracic acid; obtained, by peating potassium with boracic acid, as a dark, olive-coloured powder, devoid of taste and smell. Heated in the air or in oxygen, it is converted into boracic acid. Medical Lexicon. A Dictionary of Medical Science
  10. Non-metallic solid element (a dark-brown powder). Concise Oxford Dictionary
  11. Non-metallic element, the base of borax and boric acid. American pocket medical dictionary.
  12. An infusible element of a dark olive colour, resembling carbon in its properties. It was first obtained from boracic acid, its trioxide, the salts of which are called borates. See Borax. Glossary of terms and phrases - Percy
  13. n. An elementary substance, nearly related to carbon. Cabinet Dictionary

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