ammonium nitrate

noun Chemistry.

a white, crystalline, water-soluble powder, NH4NO3, usually produced by reacting nitric acid with vaporous ammonia: used chiefly in explosives, fertilizers, freezing mixtures, and in the manufacture of nitrous oxide.

Nearby words

  1. ammonium chromic sulfate,
  2. ammonium cyanate,
  3. ammonium hydroxide,
  4. ammonium ion,
  5. ammonium lactate,
  6. ammonium phosphate,
  7. ammonium purpurate,
  8. ammonium salt,
  9. ammonium selenate,
  10. ammonium stearate

Origin of ammonium nitrate

First recorded in 1880–85 Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for ammonium nitrate

ammonium nitrate


a colourless highly soluble crystalline solid used mainly as a fertilizer and in explosives and pyrotechnics. Formula: NH 4 NO 3
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

Science definitions for ammonium nitrate

ammonium nitrate

A colorless crystalline salt used in fertilizers, explosives, and solid rocket propellants. Chemical formula: NH4NO3.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.