from The American Heritage® Dictionary of the English Language, 4th Edition
- n. An unstable, poisonous allotrope of oxygen, O3, that is formed naturally in the ozone layer from atmospheric oxygen by electric discharge or exposure to ultraviolet radiation, also produced in the lower atmosphere by the photochemical reaction of certain pollutants. It is a highly reactive oxidizing agent used to deodorize air, purify water, and treat industrial wastes.
- n. Informal Fresh, pure air.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. An allotrope of oxygen (symbol O3) having three atoms in the molecule instead of the usual two; it is a blue gas, generated from oxygen by electrical discharge; it is poisonous and highly reactive, but in the upper atmosphere it protects life on Earth from ultraviolet radiation.
- n. Fresh air, especially that breathed at the seaside and smelling of seaweed.
from the GNU version of the Collaborative International Dictionary of English
- n. A colorless gaseous substance (O3) obtained (as by the silent discharge of electricity in oxygen) as an allotropic form of oxygen, containing three atoms in the molecule. It is a strong oxidizer, and probably exists in the air, though by the ordinary tests it is liable to be confused with certain other substances, as hydrogen dioxide, or certain oxides of nitrogen. It derives its name from its peculiar odor, which resembles that of weak chlorine.
from The Century Dictionary and Cyclopedia
- n. A modification of oxygen, having increased chemical activity; a colorless gas having a peculiar odor like that of air which contains a trace of chlorin.
- n. In the gaseous state, ozone, if seen through a column of sufficient depth or under considerable pressure, has a blue color like that of ordinary oxygen, but more marked, and when liquefied appears dark blue. The liquid boils under atmospheric pressure at—100° C. (—159° F.). It is magnetic, and more soluble in water than ordinary oxygen. Animals breathing air which contains ozone in appreciable quantity present the phenomena of slow respiration, enfeebled circulation, lowering of bodily temperature, venous condition of the blood, and ultimately death. Air charged with ozone has been applied to the treatment of distilled spirits with a view to the removal of fusel-oil, but with only partial success.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a colorless gas (O3) soluble in alkalis and cold water; a strong oxidizing agent; can be produced by electric discharge in oxygen or by the action of ultraviolet radiation on oxygen in the stratosphere (where it acts as a screen for ultraviolet radiation)
The term ozone hole or Antarctic ozone hole refers to the seasonal depletion of stratospheric ozone in a large area over Antarctica.
According to Messrs Frémy and Becquerel, the term ozone ought to be abandoned; for, after a series of careful experiments, they have come to the conclusion, that there is no real transformation of matter in the production of ozone, but that it is nothing more than 'electrified oxygen,' or oxygen in a particular state of chemical affinity.
We were also careful of the sun's rays because the hole in the ozone is above Antarctica; we wore forty-five level sunblock twenty-four hours a day.
For example, three atoms of oxygen form what we call ozone; two atoms of hydrogen uniting with one atom of oxygen form water.
At the same time, more ozone is produced through photosynthesis and the bonding of standard oxygen with free oxygen.
The ozone is depleted and the peak UV rays, which used to be from 10-2 are now from 10-4.
Long-term ozone decline over the Canadian Arctic to early 1997 from ground-based and balloon observations.
The thinning of the ozone is caused by the presence of ozone destructing gases in the atmosphere such as chlorine and bromine, originating from man-made products like chlorofluorocarbons (CFCs), which have still not vanished from the air but are on the decline as they are banned under the Montreal Protocol, which was signed on 16 September 1987.
Now ozone is a greenhouse gas that needs to be curbed?
But even that may have been wrong, since ozone is recovering fastrer than lower CFC emission can account for.
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