English Reference

Word

ammunition

Phoneticsam·mu·ni·tion

US/ˌæmjəˈnɪʃən/

UK/ˌæmjuːnˈɪʃən/

Definitions

01bullets and explosives

B2

n. the bullets, shells, or gunpowder used in guns and other weapons.

n. projectiles, explosives, and propellants used in firearms and ordnance. Uncountable in its general sense, though specific types may be countable.

“The soldiers were running low on ammunition after the long battle.”

“The logistics team worked through the night to ensure that sufficient ammunition reached the front lines before the offensive began.”

Usage

Often shortened to 'ammo' in informal speech.

02information for an argument

B2

n. facts or information you can use to support your side or attack someone else's ideas.

n. information, evidence, or arguments used to support a position or to attack an opponent in a debate or conflict.

“His past mistakes gave his political rivals plenty of ammunition to use against him.”

“The leaked internal memo provided the opposition party with all the ammunition they needed to challenge the government's new policy.”

Usage

Used figuratively to describe intellectual or social conflict.

03to supply with weapons

C2

v. to provide a person or group with bullets and other military supplies.

v. to equip or supply a military unit or individual with ammunition.

“The fort was fully ammunitioned and ready for the coming attack.”

“The treaty strictly prohibited the neighbouring states from ammunitioning the rebel forces across the border.”

Formal · Technical

Usage

The verb form is significantly less common than the noun and is typically found in formal military contexts.

Synonyms

Antonyms

Real-World Examples

“For instance, the boy who carried out the latest school shooting was able to get hold of his grandfather's legally owned gun and large quantities of ammunition.”
BBC News · 16 Aug 2026
“Elsewhere in the West Bank, multiple people were injured over the weekend, including by live ammunition, in two separate incidents in Hebron governorate involving Israeli forces, settlers and Palestinians.”
UN News · 17 Aug 2026

Etymology

From older French amunition, rebracketing of la munition (“the war supplies”) as l'amunition. Ultimately from Latin; see munition for more.

Etymology adapted from Wiktionary, available under CC BY-SA 4.0.

Word family

ammoNounammunitionNoun

This entry

Level
B2 · Upper Intermediate
Frequency
Frequent
Updated

Scan code

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English Reference