Carbon is the basic element found in coal.
- An example of carbon is the basic element found in coal.
- An example of carbon is a basic matter found in dinosaur bones which is used to determine the age of the bone.
- a nonmetallic chemical element found in many inorganic compounds and all organic compounds: diamond and graphite are pure carbon; carbon is the basic element in coal, coke, charcoal, soot, etc.: symbol, C; at. no., 6: a radioactive isotope () is used as a tracer in chemical and biochemical research, and, because of its half-life of 5,730 years and its presence in all carbon-containing matter, it is a means of dating archaeological specimens, fossils, etc.
- a sheet of carbon paper
- carbon copy
- a stick of carbon used in an arc lamp
- a carbon plate or rod used in a battery
Origin of carbonFrench carbone ; from Classical Latin carbo (gen. carbonis), coal ; from Indo-European base an unverified form ker-, to burn from source hearth
- Symbol C An abundant nonmetallic element that occurs in many inorganic and in all organic compounds, exists freely in amorphous, graphite, and diamond forms and as a constituent of coal, limestone, and petroleum, and is capable of chemical self-bonding to form an enormous number of chemically, biologically, and commercially important molecules. Other significant allotropes include fullerenes and nanotubes. Atomic number 6; atomic weight 12.011; sublimation point 3,825°C; triple point 4,489°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.
- A carbon-containing gas, notably carbon dioxide, or a collection of such gases, especially when considered as a contributor to the greenhouse effect: plans for capturing and sequestering carbon produced by power plants.
- a. A sheet of carbon paper.b. A carbon copy.
- Electricity a. Either of two rods through which current flows to form an arc, as in lighting or welding.b. A carbonaceous electrode in an electric cell.
Origin of carbonFrench carbone, from Latin carbō, carbōn-, a coal, charcoal; see ker-3 in Indo-European roots.
(countable and uncountable, plural carbons)
- (uncountable) The chemical element (symbol C) with an atomic number of 6.
- (countable, informal) A sheet of carbon paper.
- (countable, informal) A carbon copy.
- A fossil fuel that is made of impure carbon such as coal or charcoal.
- (ecology, uncountable) Carbon dioxide, in the context of global warming and climate change.
From French carbone, coined by Lavoisier, from Latin carbō (“charcoal, coal”), from Proto-Indo-European *ker- (“to burn”), see also Old English heorþ (“hearth”), Old Norse hyrr (“fire”), Gothic (hauri, “coal”), Old High German harsta (“roasting”), Russian церен (ceren, “brazier”), Old Church Slavonic крада (krada, “hearth, fireplace”), Lithuanian kuriu (“to heat”), karstas (“hot”) and krosnis (“oven”), Sanskrit कृष्ण (kṛṣṇa, “burnt, black”) and कूडयति (kūḍayati, “singes”), Latin cremare (“to burn”).