from Wiktionary, Creative Commons Attribution/Share-Alike License

  • adj. Describing certain bacteria that oxidize ammonia to nitrite and nitrate in the soil


Sorry, no etymologies found.


  • The breaking down of the humus and building of the nitrogen into other substances is the work of another set of bacteria or germs called nitrifying germs.

    The First Book of Farming

  • As regards the ammonium carbonate accumulating in the soil from the conversion of urea and other sources, we know from Winogradsky's researches that it undergoes oxidation in two stages owing to the activity of the so-called "nitrifying" bacteria (an unfortunate term inasmuch as

    Encyclopaedia Britannica, 11th Edition, Volume 3, Part 1, Slice 2 "Baconthorpe" to "Bankruptcy"

  • Soil chemosynthesis (nitrifying, hydrogen-oxidizing, iron (Fe2+) - oxidizing, and sulfur c (S) bacteria)

    Effects of changes in climate and UV radiation levels on function of arctic ecosystems in the short and long term

  • It works by creating a large surface area for de-nitrifying bacteria to colonize out of the substrate itself, but may not be the best choice for saltwater aquariums.

    DIY Under-gravel Aquarium Filters Possible -- Not Recommended

  • However, the triple N-N bond makes N2 almost inert, and only a few microorganisms have the capability to utilize (fix) N2, converting it to the more easily utilizable combined nitrogen forms – initially ammonia (NH3), or its protonated species, ammonium (NH4+) that is terminally oxidized to nitrate (NO3 -) by nitrifying bacteria.

    Marine nitrogen cycle

  • Because of the nitrifying bacteria in nodules on its roots, it is especially effective in improving the fertility of eroded soils.

    Chapter 6

  • In this manner he studied the metabolism of sea-urchin eggs, blood corpuscles, and various bacteria and especially the respiratory processes of nitrifying bacteria.

    Otto Meyerhof - Biography

  • The gypsum neutralises the alkalinity of nitrifying solutions by converting the alkaline ammonium carbonate into neutral ammonium sulphate, the calcium carbonate being precipitated.

    Manures and the principles of manuring

  • Warington at Rothamsted, who showed that the power of nitrification could be communicated to media, which did not nitrify, by simply seeding them with a nitrifying substance, and that light was unfavourable to the process.

    Manures and the principles of manuring

  • Müntz, on ammonia in air, 118; on nitrifying organisms in soil, 180; on oxidising power of micro-organisms, 197.

    Manures and the principles of manuring


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