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The definition of carbon
4 Definitions of: carbon
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- noun, a) 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 b) (as modifier)
- noun, short for carbon paper
- noun, a carbon electrode used in a carbon-arc light or in carbon-arc welding
- noun, a rod or plate, made of carbon, used in some types of battery
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From Collins
©HarperCollins 2008. Collins English Dictionary definition of carbon