Pronunciation

/rəˈdɑːr/

Definitions

Noun

Radar (abbreviation of ‘Radio Detection and Ranging’):

1. A system that uses radio waves to detect objects, especially to locate their distance, direction, or speed, especially in aviation and navigation.
2. [countable] An instance or device using this technology.
   • Example: “The ship’s radar detected a nearby iceberg.”

Verb

• To scan or track using radar.
  • Example: “The pilot radared the area for potential weather hazards.”

Phrases

• “Radar imagery” refers to images produced by radar systems.
• “Radar signature” is the unique pattern of reflected radar signals that identifies an object.
• “Radar lock” means maintaining a constant radar signal on a target.

Example Sentences

• Noun: “The air traffic controller relied on the radar to guide incoming planes.”
• Verb: “The Coast Guard radar tracked the lost hiker through the dense forest.”
• Passive: “The storm was picked up by radar before it reached the city.”

Synonyms

• Radar scan
• Radar detection
• Radar tracking
• Airborne warning and control system (AWACS)
• Sonar (for underwater detection)