ammonium nitrate: meaning, definition, pronunciation and examples
C1/C2Predominantly technical/scientific, with crossover into news and regulatory contexts.
Quick answer
What does “ammonium nitrate” mean?
A white, crystalline chemical compound with the formula NH₄NO₃, widely used as a high-nitrogen fertiliser.
Audio
Pronunciation
Definition
Meaning and Definition
A white, crystalline chemical compound with the formula NH₄NO₃, widely used as a high-nitrogen fertiliser.
A highly reactive oxidising agent also used in commercial explosives and mining, known for its potential to detonate under specific conditions of heat, confinement, or contamination.
Dialectal Variation
British vs American Usage
Differences
No significant lexical or spelling differences. Differences may arise in regulatory terminology (e.g., 'ANFO' vs 'ammonium nitrate-fuel oil').
Connotations
In both varieties, the primary connotation is technical/industrial. Post-incident news coverage (e.g., Beirut 2020, Oklahoma City 1995) strongly associates the term with catastrophic explosions.
Frequency
Frequency is similar, peaking in agricultural, industrial, and forensic news contexts.
Grammar
How to Use “ammonium nitrate” in a Sentence
[Subject] manufactures/uses ammonium nitrate for [purpose].[Quantity] of ammonium nitrate [verb] (detonated/contaminated/leached).Ammonium nitrate is classified as a(n) [classifier].Vocabulary
Collocations
Examples
Examples of “ammonium nitrate” in a Sentence
verb
British English
- The soil was ammonium-nitrated to boost yield. (rare, non-standard)
American English
- The blasting crew ammonium-nitrated the mixture. (rare, jargon)
adverb
British English
- Not applicable.
American English
- Not applicable.
adjective
British English
- The ammonium-nitrate solution requires careful handling.
American English
- They followed the ammonium-nitrate storage protocols.
Usage
Meaning in Context
Business
Referenced in agricultural supply, commodity trading, and industrial safety reports.
Academic
Core term in chemistry, agricultural science, explosives engineering, and environmental studies.
Everyday
Rare, except in news reports following industrial accidents or security incidents.
Technical
Precise specification of grade, prill size, coating, and compliance with transport/storage regulations (e.g., UN 1942, 2067).
Vocabulary
Synonyms of “ammonium nitrate”
Strong
Neutral
Weak
Vocabulary
Antonyms of “ammonium nitrate”
Watch out
Common Mistakes When Using “ammonium nitrate”
- Mispronouncing as 'ammonia nitrate'.
- Using as a countable noun (e.g., 'an ammonium nitrate') – it is uncountable.
- Confusing it with ammonium sulfate or calcium ammonium nitrate (CAN).
FAQ
Frequently Asked Questions
No, it is a legally produced and vital industrial chemical. Its sale, storage, and use are heavily regulated due to its dual-use nature as both a fertiliser and an explosive precursor.
ANFO stands for 'Ammonium Nitrate Fuel Oil', a widely used industrial explosive made by mixing porous ammonium nitrate prills with diesel fuel.
It provides a highly concentrated source of nitrogen, a key nutrient for plant growth, in a form that is readily soluble and available to crops.
It is an oxidiser, providing its own oxygen for combustion. When heated rapidly under confinement or contaminated with fuels or certain other chemicals, it can undergo a rapid, self-sustaining decomposition leading to detonation.
A white, crystalline chemical compound with the formula NH₄NO₃, widely used as a high-nitrogen fertiliser.
Ammonium nitrate is usually predominantly technical/scientific, with crossover into news and regulatory contexts. in register.
Ammonium nitrate: in British English it is pronounced /əˌməʊ.ni.əm ˈnaɪ.treɪt/, and in American English it is pronounced /əˌmoʊ.ni.əm ˈnaɪ.treɪt/. Tap the audio buttons above to hear it.
Phrases
Idioms & Phrases
- “None. The term is technical and does not feature in idiomatic expressions.”
Learning
Memory Aids
Mnemonic
Think: 'AMMONium' from ammonia (NH₃) and 'NITRATE' (NO₃) combine to make NH₄NO₃ – a compound that feeds crops but can also fuel a blast.
Conceptual Metaphor
DUAL-NATURE SUBSTANCE: A 'life-giving food' for plants vs. a 'potential bomb'. Often framed as a 'sleeping giant' when stored improperly.
Practice
Quiz
In which industry is ammonium nitrate primarily used as a mainstream, non-explosive product?