ammonium
noun
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Definition of ammonium
: an ion NH4+ derived from ammonia by combination with a hydrogen ion and known in compounds (such as salts) that resemble in properties the compounds of the alkali metals
Examples of ammonium in a Sentence
Recent Examples on the Web
The top cloud layer is ammonia ice, followed by a layer of solid ammonium hydrosulfide particles. — Ashley Strickland, CNN, "Turbulent storm clouds disrupt Jupiter's colorful appearance," 23 Aug. 2019 The negatives were turned into prints using paper that was coated with ammonium and fermented egg white, or albumen, and sensitized with silver nitrate. — Emily Toomey, Smithsonian, "The Actress Who Left the Stage to Become a Civil War Spy," 12 Aug. 2019 The industry standard for wipes and sprays is a solution that contains quaternary ammonium, an anti-bacterial compound. — Scott Douglas, Washington Post, "Your gym is teeming with invisible members: Germs. Here鈥檚 how to avoid them.," 29 July 2019 The industry standard for wipes and sprays is a solution that contains quaternary ammonium, an anti-bacterial compound. — Scott Douglas, sun-sentinel.com, "Your gym is teeming with invisible members: Germs. Here鈥檚 how to avoid them.," 29 July 2019 The process is strongly inhibited in the presence of ammonium, which mainly comes from proteins in waste. — David Grossman, Popular Mechanics, "Bacteria Could Transform Human Feces and Wastewater Into Energy," 13 Nov. 2018 The middle of the cylinder is filled with a powdered mixture of ammonium perchlorate and ammonium nitrate, the oxidants. — The Economist, "A rocket that devours itself," 31 May 2018 Scientists found higher than normal levels of ammonium and nitrogen, ingredients of the fertilizer. — Carrie Blackmore Smith, Cincinnati.com, "'Human error' caused barge to crack in half and spill fertilizer into the Ohio River," 4 Apr. 2018 In another building at Promontory, the segments are lowered into an underground shaft where they will be loaded with solid rocket fuel, a mixture of aluminum powder fuel and ammonium perchlorate as the oxidizer. — Joe Pappalardo, Popular Mechanics, "Solid Rocket City: The Utah Space Center Fighting for Its Life," 4 Apr. 2018These example sentences are selected automatically from various online news sources to reflect current usage of the word 'ammonium.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
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More Definitions for ammonium
ammonium
noun
am路mo路ni路um
| \ 蓹-藞m艒-n膿-蓹m
\
\
Medical Definition of ammonium
: an ion NH4+ derived from ammonia by combination with a hydrogen ion and known in organic compounds (as quaternary ammonium compounds) and in compounds (as salts) that resemble in properties the compounds of the alkali metals