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Meaning of FREE RADICAL

Pronunciation:  free'radikul

WordNet Dictionary
 
 Definition: [n]  an atom or group of atoms with at least one unpaired electron; in the body it is usually an oxygen molecule than has lost an electron and will stabilize itself by stealing an electron from a nearby molecule; "in the body free radicals are high-energy particles that ricochet wildly and damage cells"
 
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 Synonyms: radical
 
 See Also: atom

 

 

Products Dictionary
 
 Definition: 

Free Radical
Luke McHenry is fifteen when his mother literally drops a bomb in his lap: She tells him that, in 1970, she was part of a group of anti-Vietnam protesters who threw a pipe bomb into the ROTC building at Berkeley, which unintentionally killed a student. She has been hiding from the FBI ever since, living under an assumed name, but she now plans to turn herself in to the authorities. Luke`s journey from disbelief, to anger, to fear that his baseball season with the All Star`s traveling team is jeopardized--and anxiety about his mother--parallels the journey his mother takes from Alaska to California, where she has an emotional reunion with her family, asks for forgiveness from the relatives of the boy she killed, and faces prison. Including a subplot of Luke`s search for the father he never knew, this gritty story is filled with wisdom, exciting sports scenes, a close-up view of the justice system, and an on-the-mark depiction of the charged relationship between a questioning teenager and his guilt-ridden but loving mother.

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Medical Dictionary
 
 Definition: An atom or molecule produced as a by-product of oxidation (the cellular process of burning fuel) that bears an unpaired electron and is potentially harmful to the body. Free radicals are neutralized in the body by antioxidants.
 
Biology Dictionary
 
 Definition: An atom or or electrically neutral molecule that has one or more unpaired electrons in its outer orbital. Free radicals are unstable and react quickly with other atoms and molecules; because of this, they can cause damage to living tissues.
 

 

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