Quantcast
Merriam-Webster Logo
  • Dictionary
  • Thesaurus
  • Scrabble
  • Spanish Central
  • Learner's Dictionary

nitrogen cycle

noun

Definition of nitrogen cycle

  1. :  a continuous series of natural processes by which nitrogen passes successively from air to soil to organisms and back to air or soil involving principally nitrogen fixation, nitrification, decay, and denitrification



1908

First Known Use of nitrogen cycle

1908


NITROGEN CYCLE Defined for Kids

nitrogen cycle

noun

Definition of nitrogen cycle for Students

  1. :  a continuous series of natural processes by which nitrogen passes from air to soil to living things and back into the air




Medical Dictionary

nitrogen cycle

noun

Medical Definition of nitrogen cycle

  1. :  a continuous series of natural processes by which nitrogen passes through successive stations in air, soil, and organisms and which principally involves nitrogen fixation, nitrification, decay, and denitrification




Learn More about nitrogen cycle


Seen and Heard

What made you want to look up nitrogen cycle? Please tell us where you read or heard it (including the quote, if possible).