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boron
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English Dictionary: boron by the DICT Development Group
4 results for boron
From WordNet (r) 3.0 (2006) [wn]:
boron
n
  1. a trivalent metalloid element; occurs both in a hard black crystal and in the form of a yellow or brown powder
    Synonym(s): boron, B, atomic number 5
From Webster's Revised Unabridged Dictionary (1913) [web1913]:
   Boron \Bo"ron\ (b[omac]"r[ocr]n), n. [See {Borax}.] (Chem.)
      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.

From U.S. Gazetteer (1990) [gazetteer]:
   Boron, CA (CDP, FIPS 7568)
      Location: 35.00492 N, 117.65034 W
      Population (1990): 2101 (937 housing units)
      Area: 7.6 sq km (land), 0.0 sq km (water)
      Zip code(s): 93516

From The Elements (22Oct97) [elements]:
   boron
   Symbol: B
   Atomic number: 5
   Atomic weight: 10.811
   An element of group 13 of the periodic table. There are two allotropes,
   amorphous boron is a brown power, but metallic boron is black. The
   metallic form is hard (9.3 on Mohs' scale) and a bad conductor in room
   temperatures. It is never found free in nature. Boron-10 is used in
   nuclear reactor control rods and shields. It was discovered in 1808 by Sir
   Humphry Davy and by J.L. Gay-Lussac and L.J. Thenard.
  
  
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