acidify
/əˈsɪdɪfaɪ/Definitions
1. verb
to make or become acidic
“The rain acidified the lake’s water, causing the fish to die.”
2. verb
to add acid to something
“She acidified the pickling solution to preserve the vegetables.”
3. noun
the process of making or becoming acidic
“The acidification of the soil is affecting the local plant life.”