Boron meaning

bôrŏn
A nonmetallic element that is amorphous and brown or crystalline and black, and is extracted chiefly from kernite and borax and used in flares, propellant mixtures, nuclear reactor control elements, abrasives, and hard metallic alloys. Atomic number 5; atomic weight 10.811; melting point 2,075°C; boiling point 4000°C; specific gravity (crystal) 2.34, (amorphous) 2.37; valence 3.
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A nonmetallic chemical element occurring only in combination, as with sodium and oxygen in borax, and produced in the form of either a brown amorphous powder or very hard, brilliant crystals: its compounds are used in the preparation of boric acid, water softeners, soaps, enamels, glass, pottery, etc.: symbol, B; at. no. 5
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A shiny, brittle, black metalloid element extracted chiefly from borax. It is a good electrical conductor at high temperatures and a poor conductor at low temperatures. Boron is necessary for the growth of land plants and is used in the preparation of soaps, abrasives, and hard alloys. It is also used in the control rods of nuclear reactors as a neutron absorber. Atomic number 5; atomic weight 10.811; melting point 2,300°C; sublimation point 2,550°C; specific gravity (crystal) 2.34; valence 3.
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The chemical element (symbol B) with an atomic number of 5; a metalloid.
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Origin of boron

  • bor(ax) (carb)on

    From American Heritage Dictionary of the English Language, 5th Edition

  • From stem of borax + -on (“ending used to form names of substances”)

    From Wiktionary