"Overall acidity" refers to the level of acid present in something as a whole or in general. It indicates how acidic or sour a substance or environment is. Full definition
Most people are too acidic (from eating too much sugar and grains), and drinking warm lemon water helps reduce overall acidity, drawing uric acid from the joints. (truthaboutabs.com)
Compared with the general low activity of the previous 24 years (1971 - 1994), the past 6 years have seen a doubling of overall acidity for the whole basin, a 2.5-fold increase in major hurricanes (> 50 meters per second), and a 5-fold increase in hurricanes affecting the caribbean. (realclimate.org)
Foods like vegetables, fruits and raw nuts and seeds are more net alkaline, which is why these foods are considered so healthy; because they reduce overall acidity. (hairlossrevolution.com)