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carbon
[kahr-buhn]
noun
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. C; 12.011; 6; (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.
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.
adjective
pertaining to or noting the element carbon or any of its compounds, especially carbon dioxide.
to reduce carbon emissions.
carbon
/ ˈɑːə /
noun
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
carbon
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
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).)
Other 51Թ Forms
- carbonless adjective
- noncarbon noun
- ˈDzԴdzܲ adjective
51Թ History and Origins
Origin of carbon1
51Թ History and Origins
Origin of carbon1
Example Sentences
Such biodegradable waste breaks down to produce methane, a greenhouse gas that is around 28 times more potent than carbon dioxide.
Lord Browne, who now chairs BeyondNetZero, a fund investing in carbon transition technologies, told Laura Kuenssberg some of the government's plans were "too bullish" and would take more time than planned.
But this ecological controversy is an example of how the demand for the metals needed to power battery technology - for electric cars and other low carbon energy sources - can damage the environment.
The conservation group used an innovative funding strategy, assembling $56 million from foundations, corporations and philanthropists, as well as other sources such as tax credits, public grants and the sale of carbon credits.
New announcements included £10bn for making homes more energy efficient and a new carbon capture project in Scotland.
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