Lexic.us

Definition of Boron

1. Noun. A trivalent metalloid element; occurs both in a hard black crystal and in the form of a yellow or brown powder.

Definition of Boron

1. n. 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.

Definition of Boron

1. Noun. The chemical element (''symbol'' B) with an atomic number of 5; a metalloid ¹

¹ Source: wiktionary.com

Definition of Boron

1. a nonmetallic element [n -S] : BORONIC [adj]

Medical Definition of Boron

1. Fifth element (Z=5) in the periodic table, has 5 protons, potential use as an aneutronic fuel. Also useful as a neutron-absorber. Abbreviation: B (13 Nov 1997)

Lexicographical Neighbors of Boron

Literary usage of Boron

Below you will find example usage of this term as found in modern and/or classical literature:

1. A Dictionary of Applied Chemistry by Thomas Edward Thorpe (1921)
"Commercial boron is purified by grinding the product obtained by heating boric oxide and ... The residual boron, which may still contain boron hydride, ..."

2. Victor von Richter's Text-book of inorganic chemistry by Victor von Richter (1901)
"boron. B= ii. This element is generally classed with the metalloids, and stands isolated ... boron is trivalent, and yields only compounds of the form BXa. ..."

3. A Treatise on Chemistry by Henry Enfield Roscoe, Carl Schorlemmer (1883)
"It can be most readily prepared by the action of the vapour of carbon disulphide upon an intimate mixture of lamp-black and boron trioxide (Wohler and ..."

4. Hand-book of Chemistry by Leopold Gmelin, Henry Watts (1849)
"with pure water, it yields boron. (RD Thomson, Phil. Mag. J. 10, 419.) 2. Gaseous fluoride of boron is passed—first through a tube filled with crystallized ..."

5. The Principles of Inorganic Chemistry by Wilhelm Ostwald (1904)
"CHAPTER XXV boron (At. Wt. = 11.0) We pass now to group III of the Periodic System, the first member of which is boron. This is the only member of this ..."

6. A Dictionary of Applied Chemistry by Thomas Edward Thorpe (1912)
"boron steels are obtained either by heating amorphous boron with reduced iron ... On hardening by heating to a known temperature and quenching, boron steel ..."

7. Select Methods in Chemical Analysis. (Chiefly Inorganic). by William Crookes (1871)
"the filtrate and estimates the boracic acid in the state of double fluoride of boron and potassium. In the case of minerals like tourmaline, which contain ..."

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