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ordnance

American  
[awrd-nuhns] / ˈɔrd nəns /

noun

  1. cannon or artillery.

  2. military weapons with their equipment, ammunition, etc.

  3. the branch of an army that procures, stores, and issues, weapons, munitions, and combat vehicles and maintains arsenals for their development and testing.


ordnance British  
/ ˈɔːdnəns /

noun

  1. cannon or artillery

  2. military supplies; munitions

  3. a department of an army or government dealing with military supplies

"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

Etymology

Origin of ordnance

First recorded in 1620–30; syncopated variant of ordinance

Explanation

Ordnance is another word for military supplies, like guns, rockets, or armor. When a country is at war, it needs a lot of ordnance. The average person has probably never heard of ordnance. In fact, an ordinary person would have some explaining to do if they had ordnance, because it refers to military supplies. The word ordinance for “command” lost an i in the 1500’s and became ordnance, meaning “military materials.” Both words go with war — a command to shoot requires ordnance, or something to shoot with. Ordnance helps soldiers fight and protect them. You can’t go to war without ordnance.

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Vocabulary lists containing ordnance

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

The unexploded ordnance, some of which was heard going off during the dayslong effort to quench the fire, made it harder for firefighters to get close to the blaze.

From The Wall Street Journal Aug. 20, 2026

“They can drop large amounts of ordnance and they can also carry said ordnance very far.”

From Los Angeles Times Jun. 16, 2026

Poorly drafted emergency-power laws, some dating back to the early days of the Republic, are unexploded ordnance that could blow up the constitutional order.

From The Wall Street Journal May 19, 2026

The rest of us would like to live tolerantly in some form or fashion without using nuclear ordnance on each other.

From Salon Apr. 10, 2026

I rigged up my special effects, checked out the terrain, measured distances, collected the ordnance and equipment we’d need.

From "The Things They Carried" by Tim O'Brien

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