Acidification n. : The act or process of acidifying, or changing into an acid.

Example:
What is the formation and impact on groundwater Acidification?

Taxonomy
ocean acidification, ocean, calcification, CO2, saturation, CaCO3, marine organisms, pCO2, science, anthropogenic CO2, carbon cycle, concentrations, dissolution, mineral, horizon, Feely, Zondervan, atmosphere.

Defination from the web:
acidification and its effects on marine systems be merged into this article or section. ( Discuss) ... Ocean acidification is the name given to the ongoing decrease in the pH of the Earth's oceans, caused by their uptake of anthropogenic carbon ...