Definition of Nitrogen cycle

1. Noun. The circulation of nitrogen; nitrates from the soil are absorbed by plants which are eaten by animals that die and decay returning the nitrogen back to the soil.

Definition of Nitrogen cycle

1. Noun. The natural circulation of nitrogen, in which atmospheric nitrogen is converted to nitrogen oxides by lightning and deposited in the soil by rain where it is assimilated by plants and either eaten by animals (and returned as faeces) or decomposed back to elemental nitrogen by bacteria. ¹

¹ Source:

Medical Definition of Nitrogen cycle

1. The global cycle of moving various forms of nitrogen through the air, water, soil, plants, animals of the planet. See: nitrogen fixation. (09 Oct 1997)

Nitrogen Cycle Pictures

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Lexicographical Neighbors of Nitrogen Cycle

nitrofurantoin polyneuropathy
nitrogen balance
nitrogen compounds
nitrogen cycle (current term)
nitrogen dioxide
nitrogen distribution
nitrogen equivalent
nitrogen fixation
nitrogen fixer
nitrogen group
nitrogen inversion
nitrogen isotopes
nitrogen lag
nitrogen monoxide
nitrogen mustard
nitrogen mustard compounds
nitrogen mustards
nitrogen narcosis

Literary usage of Nitrogen cycle

Below you will find example usage of this term as found in modern and/or classical literature:

1. Foundations of Biology by Lorande Loss Woodruff (1922)
"The nitrogen cycle. A schematic representation of the circulation of nitrogen in nature. the nitrogen from the atmosphere and return it to the cycle of ..."

2. A Text-book of General Bacteriology by Edwin Oakes Jordan (1921)
"CHAPTER XXXIV BACTERIA AND THE nitrogen cycle The fact that the chemical element nitrogen enters into the cor* position of all living things raises a number ..."

3. Agricultural Bacteriology by Joseph Eames Greaves (1922)
"The nitrogen cycle.—Since nitrogen occurs as an essential part of the structure of every plant and animal, it is found in all crops and crop residues. ..."

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