noun
: a continuous series of natural processes by which nitrogen passes through successive stations in air, soil, and organisms involving principally decay, nitrogen fixation, nitrification, and denitrification
noun
: a continuous series of natural processes by which nitrogen passes through successive stations in air, soil, and organisms involving principally decay, nitrogen fixation, nitrification, and denitrification
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012