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Plasma (physics)

In physics and chemistry, a plasma is an ionized gas, and is usually considered to be a distinct phase of matter. "Ionized" in this case means that at least one electron has been dissociated from a significant fraction of the molecules.

Note:   The above text is excerpted from the Wikipedia article "Plasma (physics)", which has been released under the GNU Free Documentation License.
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October 6, 2015

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