Word:

free radical

Noun1.free radical - 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"
Synonyms: radical
atom, radical
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free list
Free liver
free living
free love
Free lover
free lunch
free morpheme
free nerve ending
free of
free of charge
free pardon
free people
free phagocyte
free port
free press
Free public house
-- free radical --
Free reed
free rein
Free school
Free services
Free ships
Free silver
Free socage
free software
Free Software Foundation
Free Soil Party
free spirit
Free State
Free States
Free stuff
free thought
free throw
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