பொருள் : An atom or group of atoms with at least one unpaired electron. In the body it is usually an oxygen molecule that has lost an electron and will stabilize itself by stealing an electron from a nearby molecule.
எடுத்துக்காட்டு :
In the body free radicals are high-energy particles that ricochet wildly and damage cells.
ஒத்த சொற்கள் : radical