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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 ).)
Notes
Derived Forms
- ˈDzԴdzܲ, adjective
Other 51Թ Forms
- bDz· adjective
- ԴDz·bDz noun
51Թ History and Origins
Origin of carbon1
51Թ History and Origins
Origin of carbon1
Example Sentences
The report calls for the rapid deployment of carbon capture and storage technology, greater use of AI to make energy grids efficient and investment in small scale nuclear reactors.
One of his first moves as PM, before the election, was to repeal Trudeau's unpopular carbon pricing programme, which was designed to give financial incentives for people and firms to turn away from fossil fuels.
The Biomass satellite, from the European Space Agency, will "weigh" the Earth's forests, revealing how much planet-warming carbon is being stored within trees and therefore kept out of the atmosphere.
I thought the carbon tax was a good measure.
A Department for Transport spokesperson said expanding Heathrow would drive growth, trade and tourism, adding: "Any proposals are assessed against the government's legal, carbon and environmental obligations."
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