from The American Heritage® Dictionary of the English Language, 4th Edition
- n. Any of various halocarbon compounds consisting of carbon, hydrogen, chlorine, and fluorine, once used widely as aerosol propellants and refrigerants. Chlorofluorocarbons are believed to cause depletion of the atmospheric ozone layer.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. Any of a class of organic compounds in which the hydrogen atoms of a hydrocarbon are replaced with those of chlorine and fluorine; formerly used as refrigerants and aerosol can propellants but withdrawn due to causing damage to the ozone layer.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a fluorocarbon with chlorine; formerly used as a refrigerant and as a propellant in aerosol cans
Sorry, no etymologies found.
Step 1: Appliances are unloaded from collection trucks and identified by type of refrigerant; those manufactured before 1996 likely contain R-12, a chlorofluorocarbon that's now listed as an ozone-depleting substance, or ODS.
After the first survey of 311 complaints ranked excessive noise as the number one source of irritation among residents, the Bloomberg administration instituted a series of noise-abatement programs, going after the offenders whom callers complained about most often officials now know that the first warm day of spring will bring a surge in use of the city's chlorofluorocarbon recycling programs.
But the Lantern suspects people have never gotten over the chlorofluorocarbon crisis of the 1970s and '80s.
With that ash, the chemical words that come up most often are: chlorofluorocarbon pollution, radiation balance, acid rain, carbon dioxide and sulfuric acid.
It was determined that CFCs (chlorofluorocarbon compounds) used in refrigerators, air conditioners, and spray cans, were the main cause.
Honeywell International Inc. was awarded a $27 million contract for an energy-efficiency renovation project at Luke Air Force Base in Phoenix -- including a new energy-management system, solar roof, and a chiller-replacement program to eliminate chlorofluorocarbon-based cooling applications, such as air conditioners.
The 4,200-square-foot store offers everything from home-delivered recycled-paper toilet tissue to a $132,000 Mercedes-Benz, replete with a chlorofluorocarbon-free air conditioner.
He was a co-author, with F.S. Rowland, of the 1974 publication in the British magazine Nature, of their research on the threat to the ozone layer from chlorofluorocarbon (CFC) gases that were being used as propellants in spray cans, as refrigerants, as solvents, etc.
Its chemical formula CCl3F reveals that it is a chlorofluorocarbon, a compound with fluorine (F) and chlorine (Cl) atom attached to the central carbon.
He took heart from the Montreal Protocol—signed in 1987 and updated in the years that followed—which successfully limited the emission of chlorofluorocarbon compounds, commonly called Freons, and other substances that had opened a hole in the ozone layer of the atmosphere, depriving the earth and its inhabitants of protection from harmful ultraviolet rays.
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