free radical definition

  • noun:
    • An atom or number of atoms that at least one unpaired electron and is therefore unstable and highly reactive. In animal areas, toxins can damage cells and so are believed to speed up the development of cancer, heart problems, and age related conditions.
    • (physics) any molecule, ion or atom which have a number of unpaired electrons; these are generally generally highly reactive and sometimes only occur as transient types
    • an atom or set of atoms with a minumum of one unpaired electron; in the body it is usually an oxygen molecule that has lost an electron and can stabilize it self by stealing an electron from a nearby molecule

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