- To reduce the pH of an alkali, or to raise the pH of an acid, to approximately 7.0.
- To make neutral.
- To counteract or compensate for something, in order to remedy an unwanted condition, improve performance, or otherwise meet specific needs. For instance, to use feedback to avoid undesired oscillation in an amplifier, or to minimize feedback to avoid howl.
- To add a sufficient amount of an acid or base to render a solution neutral.
- verb to fire at an enemy force, in order to prevent them using their weapons.