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ammonium ion

British  

noun

  1. the ion NH 4 + , formed from ammonia and present in aqueous solutions of ammonia and in many salts

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Example Sentences

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In this oxidation-reduction reaction, the nitrogen in the nitrate ion oxidizes the nitrogen in the ammonium ion.

From Textbooks • Feb. 14, 2019

What is the hybridization of the nitrogen atom in trimethyl amine and in the trimethyl ammonium ion?

From Textbooks • Feb. 14, 2019

Among the solubility rules previously discussed is the statement: Carbonates, phosphates, borates, and arsenates—except those of the ammonium ion and the alkali metals—are insoluble.

From Textbooks • Feb. 14, 2019

Nitrogen-fixing soil bacteria produce ammonium ion, or NH4+.

From Textbooks • Jan. 1, 2015

This transamination event creates a molecule that is necessary for the Krebs cycle and an ammonium ion that enters into the urea cycle to be eliminated.

From Textbooks • Jun. 19, 2013

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.