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| the estimation of something as valueless (encountered mainly as an example of one of the longest words in the English language). |
| opposition to the withdrawal of state support or recognition from an established church, esp. the Anglican Church in 19th-century England. |
| nitrification (ˌnaɪtrɪfɪˈkeɪʃən) | |
| —n | |
| 1. | See also nitrogen cycle the oxidation of the ammonium compounds in dead organic material into nitrites and nitrates by soil nitrobacteria, making nitrogen available to plants |
| 2. | a. the addition of a nitro group to an organic compound |
| b. the substitution of a nitro group for another group in an organic compound | |
nitrification ni·tri·fi·ca·tion (nī'trə-fĭ-kā'shən)
n.
The oxidation of an ammonia compound into nitric acid, nitrous acid, or any nitrate or nitrite, especially by the action of bacteria.
The treatment or combination of a substance with nitrogen or compounds containing nitrogen.
| nitrification (nī'trə-fĭ-kā'shən) Pronunciation Key
The process by which bacteria in soil and water oxidize ammonia and ammonium ions and form nitrites and nitrates. Because the nitrates can be absorbed by more complex organisms, as by the roots of green plants, nitrification is an important step in the nitrogen cycle. |