- 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.
Origin of carbon
Examples from the Web for carbon
Contemporary Examples of carbon
Methane (chemical formula CH4) is one of the simplest hydrocarbons, which literally means “containing hydrogen and carbon.”
It reacts very readily with oxygen by burning smokelessly, with carbon dioxide and water as its byproducts.
Other psychiatrists attempted to treat schizophrenia with carbon dioxide gas and artificially-induced comas.Schizophrenia Isn’t One Disorder but Eight
September 16, 2014
And “stinking rich” is the smell of zero carbon emissions at eco-friendly tech company campuses.Up To a Point: Robber Barons Make Way For Robber Nerds
P. J. O’Rourke
August 9, 2014
He plants a tree in Central America for every bottle of Tru spirits he sells to offset the carbon produced in manufacturing.People for the Ethical Treatment of Vodka
Debra A. Klein
July 23, 2014
Historical Examples of carbon
Edison concluded that carbon of some sort was the solution rather than a metal.The Age of Invention
However, what odds how you take your carbon and nitrogen and oxygen, as long as you DO get it?The Stark Munro Letters
J. Stark Munro
Carbon will combine with hydrogen, but will drop it if it can get oxygen.The Machinery of the Universe
Amos Emerson Dolbear
A generator is made of iron, copper, carbon, and insulation.
The carbon should be moved around to insure a solid joint at all points.
- 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
Word Origin for carbon
non-metallic element, 1789, coined 1787 in French by Lavoisier as charbone, from Latin carbonem (nominative carbo) "a coal, glowing coal; charcoal," from PIE root *ker- (4) "heat, fire, to burn" (cf. Latin cremare "to burn;" Sanskrit krsna "black, burnt," kudayati "singes;" Lithuanian kuriu "to heat," karštas "hot," krosnis "oven;" Old Church Slavonic kurjo "to smoke," krada "fireplace, hearth;" Russian ceren "brazier;" Old High German harsta "roasting;" Gothic hauri "coal;" Old Norse hyrr "fire;" Old English heorð "hearth").
Carbon 14, long-lived radioactive isotope used in dating organic deposits, is from 1936. Carbon dating (using carbon 14) is recorded from 1958. Carbon cycle is attested from 1912. Carbon footprint was in use by 2001. Carbon paper (soon to be obsolete) is from 1895.