1. the quality or state of being acid; sourness
2. the degree of acid strength of a solution
Usage: chemistry
3. excessive acid production in the stomach causing discomfort
Usage: medical

Examples

• The acidity of the lemon made her face pucker.
• Wine experts can detect the acidity level by taste.
• The soil’s acidity affects which plants will grow well.
• She took antacids to reduce stomach acidity.
• The acidity of the vinegar preserved the vegetables.
• Coffee’s natural acidity gives it a bright flavor.
• High acidity in rain can damage buildings over time.