Definitions
from The American Heritage® Dictionary of the English Language, 5th Edition.
- noun 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. cross-reference: Periodic Table.
from The Century Dictionary.
- noun Chemical symbol, B; atomic weight, 11. A chemical element belonging to the group of non-metals.
from the GNU version of the Collaborative International Dictionary of English.
- noun (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.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun The
chemical element (symbol B) with anatomic number of 5; ametalloid
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- noun a trivalent metalloid element; occurs both in a hard black crystal and in the form of a yellow or brown powder
Etymologies
from The American Heritage® Dictionary of the English Language, 4th Edition
from Wiktionary, Creative Commons Attribution/Share-Alike License
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Examples
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My partner: Group 13 of the period table is called the boron group.
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My partner: Group 13 of the period table is called the boron group.
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a radioactivity characterized by the emission of positive or negative electrons in boron and magnesium, by bombardment with alpha rays.
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Meantime, St. Louis-based Senoret Chemical Co. is expanding its line of Terro brand ant - and bug-bait products using a mineral containing the element boron, which is generally considered low in toxicity to humans and animals.
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Derived from boron, which is found in rocks, soil and water.
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Aside from obvious fruit vitamins like vitamin C , apple juice also contains the mineral nutrient boron, which is thought to promote healthy bones.
Apple Juice Shown to Prevent Asthma in Children | Impact Lab
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Aside from obvious fruit vitamins like vitamin C, apple juice also contains the mineral nutrient boron, which is thought to promote healthy bones.
Apple Juice Shown to Prevent Asthma in Children | Impact Lab
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Dr. Lipscomb's research involved developing X-ray diffraction techniques, usually used as a tool in physics, that allowed to him to map the connection of the atoms in an important but puzzling group of compounds called boron hydrides.
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Suzuki swapped out the zinc for a boron, which is even less reactive.
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Suzuki swapped out the zinc for a boron, which is even less reactive.
oroboros commented on the word boron
B.
December 16, 2007