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Definition of the noun ammonium

What does ammonium mean as a name of something?

noun - plural: ammoniums

  1. the ion NH4 derived from ammonia; behaves in many respects like an alkali metal ion
    • example: Ammonium carbonate is an organic compound.
    • lexical domain: Substances - nouns denoting substances
    • synonym of ammonium: ammonium ion
    • more generic word: ammonia = a pungent gas compounded of nitrogen and hydrogen


The ammonium cation is a positively charged polyatomic ion with the chemical formula NH₄⁺. It is formed by the protonation of ammonia. Ammonium is also a general name for positively charged or protonated substituted amines and quaternary ammonium cations, where one or more hydrogen atoms are replaced by organic radical groups.

  • also known as Ammóniumion, Ammónium ion, Amôni, NH4+, יון אמוניום, Amonný kationt, Amonný kation, Kationt NH4+, แอมโมเนียมไอออน, 铵

Phrases with Ammonium

Phrases starting with the word Ammonium:

  1. ammonium ion
  2. ammonium alum
  3. Ammonium Imine
  4. Ammonium Ylide
  5. Ammonium acetate
  6. ammonium nitrate
  7. Ammonium sulfate
  8. ammonium chloride
  9. ammonium carbamate
  10. ammonium carbonate
  11. ammonium hydroxide
  12. Ammonium bicarbonate
  13. Ammonium Phosphatide
  14. Ammonium Laureth Sulfate

Phrase ending with the word Ammonium:

  1. Quaternary Ammonium

Other phrases containing the word Ammonium:

  1. Ferric Ammonium Citrate
  2. quaternary ammonium compound

Printed dictionaries and other books with definitions for Ammonium

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Google previewThe Biology and Troubleshooting of Facultative Lagoons (2015)

by Michael H. Gerardi

Ammonium is the primary nitrogen nutrient for the microbes in the lagoon. Ammonium also is the energy substrate for nitrifying bacteria. Ammonia is toxic. Ammonium is produced in a lagoon when proteins are hydrolyzed to soluble amino ...

Google previewMaterials for Low-Temperature Fuel Cells (2014)

by Bradley Ladewig, San Ping Jiang, Yushan Yan

Tetraalkyl Ammonium Tetraalkyl ammonium is the most frequently used cationic functional group in HEMs and anion exchange membranes (AEMs) [30]. As the simplest tetraalkyl ammonium structure, trimethyl benzyl quaternary ...

Google previewNew and Nonofficial Remedies (1909)

Tumenol-ammonium is the ammonium salt of tumenol sulphonic acid. Tumenol- ammonium is a dark oil with a faint tarry odor and acrid taste. It is soluble in water in all proportions with a neutral reaction. It is also soluble in alcohol, ether and ...

Google previewHarmonisation of Regulatory Oversight in Biotechnology Safety Assessment of Transgenic Organisms, Volume 1 OECD Consensus Documents (2006)

OECD Consensus Documents by OECD

Glufosinate ammonium is an equimolar, racemic mixture of the D- and L-isomers of PPT. Although D-PPT is not herbicidal, L-PPT inhibits glutamine synthetase of susceptible plants and results in the accumulation of lethal levels of ammonia.

Google previewNovel Food and Feed Safety SET 1: Safety Assessment of Transgenic Organisms OECD Consensus Documents Volumes 1 and 2 (2008)

OECD Consensus Documents Volumes 1 and 2 by OECD

Glufosinate ammonium is an equimolar, racemic mixture of the D- and L-isomers of PPT. Although D-PPT is not herbicidal, L-PPT inhibits glutamine synthetase of susceptible plants and results in the accumulation of lethal levels of ammonia.

Google previewProgress in Botany (2001)

by Karl Esser, Joachim W. Kadereit

The form of nitrogen preferred by plants depends on energy availability (because ammonium is a more reduced form than nitrate), the competitive neighborhood and subtle differences in local environmental conditions (pH, rates of nitrification, ...

Google previewMarine Ecological Processes (2016)

by Ivan Valiela

AmmoniumAmmonium is a rather reduced form of nitrogen (Fig. 17-6) that is preferentially removed from water by uptake by plants, algae, and microbes, as discussed in Chap. 3, and assimilated as a source of nitrogen for incorporation into ...

Google previewAdvances in Microbial Physiology (2007)

Ammonium is the preferred non-specific microbial nitrogen substrate for synthesis of e.g. amino acids. Microbially synthesized amino acids may partially be released into the gut lumen and taken up by ileal enterocytes (in the colon, bacterial ...

Google previewHydroinformatics Tools for Planning, Design, Operation and Rehabilitation of Sewer Systems (2013)

by Jiri Marsalek, Cedo Maksimovic, Evzen Zeman, Roland Price

Ammonium is a dissolved pollutant that is hardly present in the river during dry weather periods, and most of the WWTPs in the study area were nitrifying even during the observed storm event. Ammonium is, therefore, a ...

Google previewRecent Advances in Phototrophic Prokaryotes (2010)

by Patrick C. Hallenbeck

Biological Nitrogen Fixation Ammonium is the preferred inorganic nitrogen source in bacteria, as it can directly be incorporated into organic compounds. The deprotonated form, ammonia ...

Google previewNitrogen Cycling in Bacteria (2011)

Molecular Analysis by James W. B. Moir

Usually, ammonium is the preferred inorganic nitrogen source for microorganisms. Ammonium assimilation requires the transport of ...

Google previewNitrogen Fixation in Agriculture, Forestry, Ecology, and the Environment (2006)

by Dietrich Werner, William E. Newton

Ammonia/ammonium is the most frequently found form of nitrogen in the biosphere and ammonia is transferred efficiently over long distances via volatilization. Under oxic conditions, ammonia is not stable and is converted to nitrate by ...

Google previewMolecular Mechanisms Controlling Transmembrane Transport (2004)

by Eckhard Boles, Reinhard Krämer

and eukaryotic microbes, ammonium is the preferred nitrogen source and although organisms can often acquire a variety of nitrogen sources most of these are transformed into ammonium before they are utilised in biosynthetic pathways.

Google previewBiogeochemistry of Inland Waters (2010)

by Gene E. Likens

Ammonium is a weak acid that is in equilibrium in a solution with ammonia gas, which is a base. The equilibrium constant for this relationship is 10À9.3. Thus, ammonium is more dominant whenever the pH is less than 9.3, as is generally true ...

Google previewProtein Misfolding, Aggregation and Conformational Diseases (2007)

Part B: Molecular Mechanisms of Conformational Diseases by Vladimir N. Uversky, Anthony Fink

Growth of URA2 mutant Saccharomyces cerevisiae cell Minimal medium + ammonium +USA Ammonium is a good nitrogen source Minimal medium + proline + USA Yeast cells grow The permease Dal5p is expressed and ureidosuccinate is ...

Google previewThe Ecology of the Nitrogen Cycle (1987)

by Janet I. Sprent

Ammonium is the principal form of inorganic nitrogen in many undisturbed soils: it may exchange with cations on soil colloids in a reversible way or from more stable complexes which account for up to 5% of total nitrogen in soil (Smith, 1982b).

Google previewNitrogen in Agricultural Systems (2008)

by James Stuart Schepers, William Raun

Ammonium is a cation, which is strongly sorbed to soil particles through cation exchange processes, and Copyright 9 2008. American Society of Agronomy, Crop Science Society of America. Soil Science Society of America, 677 S. Segoe Rd., ...

Google previewFreshwater Ecology (2002)

Concepts and Environmental Applications by Walter K. Dodds

Ammonium is the ionic form found in neutral to acidic waters. Under basic conditions the ion is converted to ammonia gas (NH3), which can move between the atmosphere and the water. Nitrite (NO2 ), an additional form of dissolved inorganic ...

Google previewEncyclopedia of Remedy Relationships in Homoeopathy (2003)

by Abdur Rehman

Ammonium. benzoicum. Miasm: Pso50 Complementary Remedies: - Followed well by: Inimical: - Antidotes: - Collaterals: Am-ph (Gouty deposits), Benz-ac (Gout , rheumatism), Berb, Caust, Helon, Kalm (Albuminuria- Helon, Canth), Lith, Lith-b, ...

Google previewLewis' Dictionary of Toxicology (1998)

by Robert Alan Lewis

ammonium ion Amoracia lapathifolia miting; and collapse. Perforations of the esophagus and stomach may occur with fever, and abdominal rigidity. At 12-24 hours after acute exposure, lung irritation and edema may appear. Inhalation of ...

Google previewThe Outlines of Materia Medica & Clinical Dictionary (1997)

by Henry Buck

AMMONiUM MURIATICUM. false membrane is found here and there, in the buccal cavity, trachea, and bronchi ; also the Epiglottis and rima, which were intensely red in the parts that were not so covered.

Online dictionaries and encyclopedias with entries for Ammonium

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Small photo of Ammonium urateSmall photo of chemical reaction of ammonium dichromate if to set fire to it on the foilSmall photo of Nitrogen fertilizer, ammonium sulphateSmall photo of chemical reaction of ammonium dichromate if to set fire to it on the foilSmall photo of chemical reaction of ammonium dichromate if to set fire to it on the foilSmall photo of chemical reaction of ammonium dichromate if to set fire to it on the foilSmall photo of chemical reaction of ammonium dichromate if to set fire to it on the foil More...

Video language resources about Ammonium

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View more videos about Ammonium Imine, Ammonium Ylide, Ammonium acetate, Ammonium nitrate, Ammonium sulfate, Ammonium chloride, Ammonium Carbamate, Ammonium hydroxide, Ammonium bicarbonate, Ammonium Phosphatide, Ferric ammonium citrate, and Quaternary Ammonium Compound.

See also the pronunciation examples of Ammonium!

Scrabble value of A1M3M3O1N1I1U1M3

The value of this 8-letter word is 14 points. It is included in the first and second editions of the Official Scrabble Players Dictionary.

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