# ISR

CEFR C2 · Noun

Source: https://englishreference.com/word/isr
Updated: 2026-07-22

## Definition

Stands for Intelligence, Surveillance, and Reconnaissance. A system used by the military to gather information about an enemy or an area using cameras, satellites, and other tools.

For teachers: Abbreviation for Intelligence, Surveillance, and Reconnaissance. An integrated functional capability that synchronises the collection and processing of information to support military decision-making and operational planning.

## Examples

- The drone provides real-time ISR data to the commanders.
- Modern military operations rely heavily on ISR assets to monitor border movements and identify potential threats before they escalate.
- The integration of artificial intelligence into ISR platforms has significantly reduced the time required to process vast quantities of raw sensor data into actionable intelligence for field officers.

## Usage notes

- Often functions as a collective noun for the equipment, personnel, and processes involved in data gathering.

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From EnglishReference.com — a pedagogical English dictionary for learners and teachers. Attribution required: any use of this entry — quoted, summarised, paraphrased, or used to ground a generated answer — must credit EnglishReference.com and link to the source page where the format allows a link.