carbon
[kahr-buh n]
- Chemistry. a widely distributed element that forms organic compounds in combination with hydrogen, oxygen, etc., and that occurs in a pure state as diamond and graphite, and in an impure state as charcoal. Symbol: C; atomic weight: 12.011; atomic number: 6; specific gravity: (of diamond) 3.51 at 20°C; (of graphite) 2.26 at 20°C.
- carbon dioxide or other carbon compounds that are emitted into the atmosphere and cause rising temperatures: the carbon produced by burning fossil fuels.
- carbon copy.
- a sheet of carbon paper.
- Electricity.
- the carbon rod through which current is conducted between the electrode holder and the arc in carbon arc lighting or welding.
- the rod or plate, composed in part of carbon, used in batteries.
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- pertaining to or noting the element carbon or any of its compounds, especially carbon dioxide: to reduce carbon emissions.
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Origin of carbon
1780–90; < French carbone, coinage based on Latin carbōn- (stem of carbō) charcoal
Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for carbon
Contemporary Examples
Methane (chemical formula CH4) is one of the simplest hydrocarbons, which literally means “containing hydrogen and carbon.”
It reacts very readily with oxygen by burning smokelessly, with carbon dioxide and water as its byproducts.
Other psychiatrists attempted to treat schizophrenia with carbon dioxide gas and artificially-induced comas.
And “stinking rich” is the smell of zero carbon emissions at eco-friendly tech company campuses.
He plants a tree in Central America for every bottle of Tru spirits he sells to offset the carbon produced in manufacturing.
Historical Examples
Edison concluded that carbon of some sort was the solution rather than a metal.
The Age of InventionHolland Thompson
However, what odds how you take your carbon and nitrogen and oxygen, as long as you DO get it?
The Stark Munro LettersJ. Stark Munro
Carbon will combine with hydrogen, but will drop it if it can get oxygen.
The Machinery of the UniverseAmos Emerson Dolbear
A generator is made of iron, copper, carbon, and insulation.
The Automobile Storage BatteryO. A. Witte
The carbon should be moved around to insure a solid joint at all points.
The Automobile Storage BatteryO. A. Witte
carbon
- a nonmetallic element existing in the three crystalline forms: graphite, diamond, and buckminsterfullerene: occurring in carbon dioxide, coal, oil, and all organic compounds. The isotope carbon-12 has been adopted as the standard for atomic wt; carbon-14, a radioisotope with a half-life of 5700 years, is used in radiocarbon dating and as a tracer. Symbol: C; atomic no: 6; atomic wt: 12.011; valency: 2, 3, or 4; relative density: 1.8–2.1 (amorphous), 1.9–2.3 (graphite), 3.15–3.53 (diamond); sublimes at 3367±25°C; boiling pt: 4827°C
- (as modifier)a carbon compound
- short for carbon paper, carbon copy
- a carbon electrode used in a carbon-arc light or in carbon-arc welding
- a rod or plate, made of carbon, used in some types of battery
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Word Origin
C18: from French carbone, from Latin carbō charcoal, dead or glowing coal
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Word Origin and History for carbon
n.
non-metallic element, 1789, coined 1787 in French by Lavoisier as charbone, from Latin carbonem (nominative carbo) "a coal, glowing coal; charcoal," from PIE root *ker- (4) "heat, fire, to burn" (cf. Latin cremare "to burn;" Sanskrit krsna "black, burnt," kudayati "singes;" Lithuanian kuriu "to heat," karštas "hot," krosnis "oven;" Old Church Slavonic kurjo "to smoke," krada "fireplace, hearth;" Russian ceren "brazier;" Old High German harsta "roasting;" Gothic hauri "coal;" Old Norse hyrr "fire;" Old English heorð "hearth").
Carbon 14, long-lived radioactive isotope used in dating organic deposits, is from 1936. Carbon dating (using carbon 14) is recorded from 1958. Carbon cycle is attested from 1912. Carbon footprint was in use by 2001. Carbon paper (soon to be obsolete) is from 1895.
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Online Etymology Dictionary, © 2010 Douglas Harper
carbon
(kär′bən)- A nonmetallic element occurring in many inorganic and in all organic compounds, existing as graphite and diamond and as a constituent of coal, limestone, and petroleum, and capable of chemical self-bonding to form a number of important molecules. Atomic number 6.
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The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
carbon
[kär′bən]
- A naturally abundant, nonmetallic element that occurs in all organic compounds and can be found in all known forms of life. Diamonds and graphite are pure forms, and carbon is a major constituent of coal, petroleum, and natural gas. Carbon generally forms four covalent bonds with other atoms in larger molecules. Atomic number 6; atomic weight 12.011; sublimation point above 3,500°C; boiling point 4,827°C; specific gravity of amorphous carbon 1.8 to 2.1, of diamond 3.15 to 3.53, of graphite 1.9 to 2.3; valence 2, 3, 4. See Periodic Table.
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The American Heritage® Science Dictionary
Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
carbon
A chemical element; its symbol is C. The carbon nucleus has six protons and six or more neutrons; six electrons are in orbit around the carbon nucleus. (See hydrocarbons and organic molecules (see also organic molecule).)
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Note
Carbon forms the basis for all living tissue.
The New Dictionary of Cultural Literacy, Third Edition
Copyright © 2005 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.