boron

boron
A nonmetallic trivalent element, atomic no. 5, atomic wt. 10.811; occurs as a hard crystalline mass or as a brown powder, and forms borates and boric acid. A nutritional need has been reported for pregnant women. [Pers. Burah]

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bo·ron 'bō(ə)r-.än, 'bȯ(ə)r- n a trivalent metalloid element found in nature only in combination and used in metallurgy and in composite structural materials symbol B see ELEMENT (table)
bo·ron·ic bȯr-'än-ik, bōr- adj

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bo·ron (B) (borґon) [L. borium] a nonmetallic element occurring in the form of crystals and as a powder. It is the base of borax and boric acid; atomic number 5, specific gravity 2.54, atomic weight 10.811. See also boron poisoning, under poisoning.

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  • Boron — (pronEng|ˈbɔərɒn) is a chemical element with atomic number 5 and the chemical symbol B. Boron is a trivalent nonmetallic element which occurs abundantly in the evaporite ores borax and ulexite. Boron is never found as a free element on… …   Wikipedia

  • Boron — hat folgende Bedeutungen: ein Dorf in den USA, siehe Boron (Kalifornien) eine Gemeinde in Frankreich, siehe Boron (Territoire de Belfort) ein Fluss in Frankreich, Nebenfluss des Cher, siehe Boron (Fluss) der aus Letzterer stammende Dichter Robert …   Deutsch Wikipedia

  • Boron — Saltar a navegación, búsqueda Boron País …   Wikipedia Español

  • 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… …   Elements of periodic system

  • Boron — Boron, CA U.S. Census Designated Place in California Population (2000): 2025 Housing Units (2000): 1103 Land area (2000): 13.848524 sq. miles (35.867512 sq. km) Water area (2000): 0.000000 sq. miles (0.000000 sq. km) Total area (2000): 13.848524… …   StarDict's U.S. Gazetteer Places

  • Boron, CA — U.S. Census Designated Place in California Population (2000): 2025 Housing Units (2000): 1103 Land area (2000): 13.848524 sq. miles (35.867512 sq. km) Water area (2000): 0.000000 sq. miles (0.000000 sq. km) Total area (2000): 13.848524 sq. miles… …   StarDict's U.S. Gazetteer Places

  • Boron — Bo ron (b[=o] r[o^]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 …   The Collaborative International Dictionary of English

  • Bōron — Bōron, 1) (Min.), bei Leonhard eine Gruppe der Mineralien, enthält blos das Geschlecht Borsäure, so v.w. Sassaliu; 2) (Chem.), so v.w. Bor …   Pierer's Universal-Lexikon

  • Boron — Boron, s.v. w. Bor …   Lexikon der gesamten Technik

  • BORON — Troglodytarum oppid. Plin. l 6. c. 29 …   Hofmann J. Lexicon universale

  • boron — 1812, from BORAX (Cf. borax) + ending abstracted unetymologically from carbon (it resembles carbon). Originally called boracium by Humphrey Davy because it was drawn from boracic acid. Related: Boric …   Etymology dictionary

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