sonar

[ˈsəʊnɑː(r)]

sonar Definition

a system for detecting objects under water and for measuring the water's depth by emitting sound pulses and detecting or measuring their return after being reflected.

Using sonar: Examples

Take a moment to familiarize yourself with how "sonar" can be used in various situations through the following examples!

• Example

  The submarine uses sonar to detect other vessels.

• Example

  The sonar showed that the fish were at a depth of 50 meters.

• Example

  The ship's sonar detected the presence of a large underwater object.

sonar Synonyms and Antonyms

Synonyms for sonar

• echolocation
• radar
• echo sounding

Phrases with sonar

• active sonar

  a type of sonar that emits sound waves to detect objects and measure distances

  Example

  Active sonar is used by submarines to locate other vessels.

• passive sonar

  a type of sonar that listens for sounds emitted by other objects in the water

  Example

  Passive sonar is used by ships to detect submarines.

• sonar dome

  a protective cover that houses the sonar equipment on a ship or submarine

  Example

  The sonar dome was damaged during the collision with the other vessel.

Origins of sonar

an acronym for 'sound navigation and ranging'

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Summary: sonar in Brief

The term 'sonar' [ˈsəʊnɑː(r)] refers to a system for detecting underwater objects and measuring water depth using sound pulses. It is used by submarines and ships, and can be active or passive. Examples include 'The sonar showed that the fish were at a depth of 50 meters.' and 'The ship's sonar detected the presence of a large underwater object.'