You searched for: “acidifying
acidify (verb), acidifies; acidified; acidifying
To make, turn into, or to become acid: Water is not acidified by bleach, but bleach does kill bacteria.

Jane wanted to acidify the alkaline soil in her garden, and so once in a while she mixed it with peat,

This entry is located in the following units: acid-, acidi-, acido-, -acidity (page 1) -fy (page 1)
acidifying (adjective), more acidifying, most acidifying
Regarding the convertion into an acid; concerning the power to change into an acid. Oxygen is called the acidifying principle or element.
This entry is located in the following unit: acid-, acidi-, acido-, -acidity (page 2)