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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
/ ä′ə /
- 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
“So you can choose things that matter to you, diversity and leadership or carbon footprint to show you how your portfolio aligns with the values, or what alternatives there could be,” Hartvigsen said.
Depending on the type of rocket fuel used, launches produce nitrogen oxides, chlorine, black carbon particles, water vapor, carbon monoxide and carbon dioxide — and no propellant avoids creating of some kind of emissions.
The seven hydrogen hubs were collectively expected to produce 3 million metric tons of hydrogen each year — reducing 25 million metric tons of carbon dioxide emissions, or roughly the amount of 5.5 million gas-powered cars.
The Axe promises the flexibility of a helicopter but without the cost, noise pollution or carbon emissions.
Among the world’s largest seagrass fields and the planet’s most important carbon sinks, this high-seas patch of ocean covers an area the size of Switzerland.
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