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| selecting for combination or action; tending to combine with certain substances in preference to others, such as elective attraction |
| a vessel, commonly a glass bulb with a long neck bent downward, used for distilling or decomposing substances by heat |
| free radical | |
| —n | |
| Compare group Sometimes shortened to: radical an atom or group of atoms containing at least one unpaired electron and existing for a brief period of time before reacting to produce a stable molecule | |
free radical n.
An uncharged atom or group of atoms having at least one unpaired electron, which makes it highly reactive.
An organic compound having some unpaired valence electrons; a normal byproduct of oxidation reactions in metabolism.
| free radical
An atom or group of atoms that has at least one unpaired electron and is therefore unstable and highly reactive. In animal tissues, free radicals can damage cells and are believed to accelerate the progression of cancer, cardiovascular disease, and age-related diseases. |