noun, Biochemistry, Physiology.
the difference between the amount of nitrogen taken in and the amount excreted or lost: used to evaluate nutritional balance.
nitrogen balance n.
The difference between the amount of nitrogen taken into the body and the amount excreted or lost.
noun 1. Chemistry, Biochemistry. a nitrogen-containing organic compound that has the chemical properties of a base, especially a pyrimidine or purine: Four nitrogen bases are present in a DNA molecule. nitrogen base One of the nitrogen-containing purines (adenine or guanine) or pyrimidines (cytosine, thymine, or uracil) found in the nucleic acids DNA and RNA. The […]
noun 1. the continuous sequence of events by which atmospheric nitrogen and nitrogenous compounds in the soil are converted, as by nitrification and nitrogen fixation, into substances that can be utilized by green plants, the substances returning to the air and soil as a result of the decay of the plants and denitrification. noun 1. […]
noun, Chemistry. 1. a reddish-brown, highly poisonous gas, NO 2 , used as an intermediate in the manufacture of nitric and sulfuric acids, and as a nitrating and oxidizing agent; a major air pollutant from the exhaust of internal combustion engines that are not fitted with pollution control devices. noun 1. a red-brown poisonous irritating […]
- Nitrogen distribution
nitrogen distribution n. See nitrogen partition.