1. the process of becoming acidic or more acidic
2. the process of making something acidic by adding acid

Examples

• Ocean acidification is caused by increased carbon dioxide absorption.
• The acidification of soil can harm plant growth.
• Scientists are studying the acidification of lakes due to acid rain.
• The acidification process changed the water’s pH level.
• Industrial pollution contributes to the acidification of waterways.
• Farmers must monitor soil acidification to maintain crop yields.