The process of making or becoming an acid. An acid is a substance that gives off hydrogen ions in water and forms salts by combining with certain metals.

The addition of acid to wine by a winemaker. The goal is to balance the wine’s soft components (sugar, alcohol and fruit). It is legal in some areas—such as Bordeaux, Burgundy, Australia and Californi [..]

to become more acid.

the increase in acidity in an environment due to the development of a particular biome or due to human pollution causing unnaturally high levels of acid rain.

Change in natural chemical balance caused by an increase in the concentration of acidic elements. United Nations Environment Programme (UNEP) 2012 1

The dissolving of carbon dioxide in the oceans, which forms carbonic acid, lowering pH.

(n) the process of becoming acid or being converted into an acid

Process whereby soil becomes acid (pH < 7) because acid parent material is present or in regions with high rainfall, where soil leaching occurs. Acidification can be accelerated by human activities [..]

The scientific phenomenon in which carbon dioxide absorbed by the ocean changes the water’s ph balance, making it more acidic. Often referred to as “the sister problem to climate change.” Organisms that build calcium carbonate shells for themselves are the first to be negatively effected by OA as they are unable to pull the carbonate they need from [..]

Acidication of surface waters occurs where there are large inputs of acidic pollutants and where catchments have susceptible acid soils and underlying rock.

The process of making or becoming an acid. An acid is a substance that gives off hydrogen ions in water and forms salts by combining with certain metals.

The addition of an acid (usually nitric or sulfuric) to a sample to lower the pH below 2.0. The purpose of acidification is to fix a sample so it will not change until it is analyzed.

Acidification is the reduction of the pH of soil, waterways and lakes.

in the gas phase this process happens when compounds like nitrogen oxides and sulphur oxides are converted in a chemical reaction in the gas phase or in clouds into acidic substances. These acids are [..]

The act or process of acidifying, or changing into an acid. Origin: Cf. F. Acidification. (01 Mar 1998)

Acidification is the process of changing into an acid or becoming more acidic (i.e., having lower pH). For example, acid rain causes soils and lakes to become more acidic.

The result of acidifying pollutants emissions, such as SO2

The lowering of pH in soils or water. Commonly associated with changes caused by external processes such as acid precipitation and acidic runoff.

Acidification is caused by acid depositions of three main pollutants: sulfur dioxide (SO2), nitrogen oxides (NOx), and ammonia (NH3). Acid depositions have negative impacts on water, forests, and soil as well as causing damage to buildings and monuments. The main sources of emissions of acidifying substances are fossil fuel combustion used for ener [..]

Increase of hydrogen ions, usually expressed as the pH value of environmental media.

Adding ACIDITY during winemaking to compensate for grapes which have over-ripened.

An increasing concentration of hydrogen ions (H+) in soil or water.

a decrease in pH of surface waters and soils. As soils naturally become acidified over time; acidification generally refers to the enhanced changes due to anthropogenic deposition of sulphur and nitrogen species.