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boron
The Collaborative International Dictionary
Boron

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, 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.

Douglas Harper's Etymology Dictionary
boron

1812, from borax + ending abstracted unetymologically from carbon (it resembles carbon). Originally called boracium by Humphrey Davy because it was drawn from boracic acid. Related: Boric.

Wiktionary
boron

n. The chemical element (''symbol'' B) with an atomic number of 5; a metalloid

WordNet
boron

n. a trivalent metalloid element; occurs both in a hard black crystal and in the form of a yellow or brown powder [syn: B, atomic number 5]

Gazetteer
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 (35.867512 sq. km)
FIPS code: 07568
Located within: California (CA), FIPS 06
Location: 35.015177 N, 117.660799 W
ZIP Codes (1990): 93516
Note: some ZIP codes may be omitted esp. for suburbs.
Headwords:
Boron, CA
Boron
Wikipedia
Boron

Boron is a chemical element with symbol B and atomic number 5. Produced entirely by cosmic ray spallation and supernovae and not by stellar nucleosynthesis, it is a low-abundance element in the Solar system and in the Earth's crust. Boron is concentrated on Earth by the water-solubility of its more common naturally occurring compounds, the borate minerals. These are mined industrially as evaporites, such as borax and kernite. The largest known boron deposits are in Turkey, the largest producer of boron minerals.

Elemental boron is a metalloid that is found in small amounts in meteoroids but chemically uncombined boron is not otherwise found naturally on Earth. Industrially, very pure boron is produced with difficulty because of refractory contamination by carbon or other elements. Several allotropes of boron exist: amorphous boron is a brown powder; crystalline boron is silvery to black, extremely hard (about 9.5 on the Mohs scale), and a poor electrical conductor at room temperature. The primary use of elemental boron is as boron filaments with applications similar to carbon fibers in some high-strength materials.

Boron is primarily used in chemical compounds. About half of all consumption globally, boron is used as an additive in glass fibers of boron-containing fiberglass for insulation and structural materials. The next leading use is in polymers and ceramics in high-strength, lightweight structural and refractory materials. Borosilicate glass glassware is desired for its greater strength and thermal shock resistance than ordinary soda lime glass. Boron compounds are used as fertilizers in agriculture and in sodium perborate bleaches. A small amount of boron is used as a dopant in semiconductors, and reagent intermediates in the synthesis of organic fine chemicals. A few boron-containing organic pharmaceuticals are used or are in study. Natural boron is composed of two stable isotopes, one of which ( boron-10) has a number of uses as a neutron-capturing agent.

In biology, borates have low toxicity in mammals (similar to table salt), but are more toxic to arthropods and are used as insecticides. Boric acid is mildly antimicrobial, and a natural boron-containing organic antibiotic is known. Boron is essential to life. Small amounts of boron compounds play a strengthening role in the cell walls of all plants, making boron a necessary plant nutrient. Boron is involved in the metabolism of calcium in both plants and animals. It is considered an essential nutrient for humans, and boron deficiency is implicated in osteoporosis.

Boron (Middle-earth)
  1. redirect House of Bëor#Lords of the House
Boron (disambiguation)

Boron is a chemical element.

Boron can also refer to:

  • Boron, California, a census-designated place in California
  • Boron, Mali, a town and commune in Mali
  • Boron, Territoire de Belfort, a commune département in France
  • Kathrin Boron, German Olympic athlete
  • Walter Boron, American scientist
  • Robert de Boron, medieval poet
  • Boron Oil, a subsidiary and brand of Standard Oil of Ohio, acquired by BP
  • Boron (House of Bëor), a fictional character in J. R. R. Tolkien's Middle-earth legendarium

Usage examples of "boron".

Yes, Boron had heard a monk talk about this question of the Christian kings of the Orient.

Abdul tried to press Boron to tell them more about the Earthly Paradise, but Boron had abused the hogsheads of Les Trois Chandeliers, and said he could no longer remember anything.

As if they had had the same thought and without saying a word to each other, the two friends grasped Boron under the armpits and carried him to their room.

He also met Boron, but those fantasies about the Earthly Paradise seemed to hold little interest for him.

Kyot and by Boron are in circulation in many regions, and so a hint would be enough, and a word to the wise would suffice.

Of which Boron said that it grows on trees infested with snakes, and when it is ripe you set fire to the trees and the snakes escape and hide in their lairs.

The Brahman idea seemed useful to Boron because the Brahmans had been seen by Alexander the Great when he reached the most extreme Orient imaginable.

To be truthful, since Frederick was employing me more and more as a confidential messenger in various situations, I wanted to create my little personal court, the Poet, Abdul, Boron, Kyot, and Rabbi Solomon.

Both Boron and Kyot were hoping to find the kingdom of the Priest in order to take possession of the Grasal, which would have given them God knows what glory and power in those Northern lands where all were still searching for it.

Baudolino, the Poet, Boron, Abdul, Solomon, and Boidi, who was dragging Zosimos on his chain.

And when Boron asked him what these corpuscles were, his opponent reminded him that, according to certain ancient Greek philosophers, and other wise Arab theologians, the followers of Kalam, namely, the Motokallimun, one should not think that bodies are solid substances.

It was confronted by Boron, Kyot, Boidi, and Porcelli, while Solomon hurled stones at it, muttering curses in his holy language.

Baudolino, the Poet, Boron, and Kyot knelt in prayer, while at a slight distance Solomon murmured the litanies that the Jews habitually recite.

We had been transformed into a band of idlers, Boron and Ardzrouni spent their days debating the vacuum, and in fact Ardzrouni had persuaded Gavagai to put him in touch with a ponce carpenter, and was contriving with him to see if it was possible to construct only from wood, without any metal, one of his miraculous pumps.

When Ardzrouni was devoting himself to his mad venture, Boron went off with Kyot, riding into the plains and daydreaming of the Grasal as they kept their eyes alert to see if the ghost of Zosimos might appear on the horizon.