free radical   (TTS Sound)

The free_radical has 1 Senses.

• radical, free radical
• フリーラジカル, 遊離基
• 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; "in the body free radicals are high-energy particles that ricochet wildly and damage cells"
• 少なくとも対を成さない原子1つを持った原子または分子団