1. makes something chemically neutral by adding an acid or base
Usage: chemistry
2. counteracts or cancels out the effect of something
3. makes a country or area neutral in a conflict
Usage: politics; military

Examples

• The antacid neutralises excess stomach acid.
• Adding lime to the soil neutralises its acidity.
• The new policy neutralises the advantage of larger companies.
• The treaty neutralises the disputed territory.
• Special forces neutralised the enemy position.
• This cream neutralises odors effectively.
• The buffer solution neutralises pH changes.