Definition of "carbon" in 英语

noun

1. (uncountable) The chemical element (symbol C) with an atomic number of 6. It can be found in pure form for example as graphite, a black, shiny and very soft material, or diamond, a colourless, transparent, crystalline solid and the hardest known material.

   • All life as we know it has carbon as the backbone of many of its molecules; carbon’s tetravalence gives it special importance in biochemical molecular bonds.

2. (countable) An atom of this element, in reference to a molecule containing it.

   • A methane molecule is made up of a single carbon with four hydrogens.

3. (countable, informal) A sheet of carbon paper.

4. (countable, informal) A carbon copy.

   • Please provide me with a carbon of your form.
   • Press firmly: you are making a carbon.

5. A fossil fuel that is made of impure carbon such as coal or charcoal.

6. Soot.

   • Every morning she cleaned the carbon from the lamp chimneys.

7. (ecology, climate change, uncountable) Ellipsis of carbon dioxide.

   • carbon neutral
   • carbon capture

8. A carbon rod or pencil used in an arc lamp.

9. A plate or piece of carbon used as one of the elements of a voltaic battery.

10. (informal) Ellipsis of carbon fiber (reinforced polymer).

    • carbon bike frame

verb

1. (Internet, transitive, uncommon) To send a carbon copy of an email message to.

   • When I send it, I’ll carbon Julia so she’s aware.