acid phosphatase n.
A phosphatase with optimum functioning at pH 5.4 and present in the prostate gland.
- Acid phosphate
(def 1). Historical Examples The fertilizers that I get more inquiries about than any others are the phosphates—bone meal, acid phosphate and rock phosphate. Trees, Fruits and Flowers of Minnesota, 1916 Various To furnish the phosphoric acid he can buy 1,786 pounds acid phosphate. The First Book of Farming Charles L. Goodrich Either ground bone […]
- Acid precipitation
meteorological precipitation that is relatively acidic. acid precipitation Any form of precipitation, including rain, snow, hail, fog, or dew, that is high in acid pollutants, especially sulfuric and nitric acid. Acid precipitation has a pH of less than 5.6 (the normal acidity of unpolluted atmospheric water) and is often less than pH 5.0. Also called […]
- Acid radical
the remainder of an acid molecule after acidic hydrogen has been removed. Historical Examples In acid salts the prefixes noticed above are added to express the preponderance of the acid radical over the metal. Cooley’s Practical Receipts, Volume II Arnold Cooley Every salt, therefore, consists of a basic and of an acid radical. Cooley’s Practical […]
- Acid rain
precipitation, as rain, snow, or sleet, containing relatively high concentrations of acid-forming chemicals, as the pollutants from coal smoke, chemical manufacturing, and smelting, that have been released into the atmosphere and combined with water vapor: harmful to the environment. noun rain that contains a high concentration of pollutants, chiefly sulphur dioxide and nitrogen oxide, released […]