noun.
A reaction in which the atoms of an element lose electrons and the valence of the element increases.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
noun.
the process of oxidizing; the addition of oxygen to a compound with a loss of electrons; always occurs accompanied by reduction
Word Usage
"Of all the electron-grabbing elements, the most important is oxygen, so much so that chemists use the term oxidation to name the general chemical activity of grabbing electrons from other atoms, even if a chlorine atom is doing the grabbing."