Sonar

/ˈsoʊ.nɑːr/

Meaning & Definition

noun
A system for the detection of objects underwater by emitting sound waves and measuring their reflections.
The submarine used sonar to locate the shipwreck at the bottom of the ocean.
The technique of using sound waves to measure distances underwater.
Scientists employed sonar technology to map the seafloor and study marine ecosystems.
An acronym for Sound Navigation and Ranging.
The navy relies on sonar for navigation and detecting enemy submarines.

Etymology

Acronym for Sound Navigation and Ranging.

Common Phrases and Expressions

sonar technology
Technology that utilizes sonar for navigation or detection.
active sonar
A type of sonar that transmits sound and listens for echoes.
passive sonar
A type of sonar that only listens for sounds without sending any signals.

Related Words

ultrasound
Sound waves with a frequency higher than the upper limit of human hearing, used in sonar.
echolocation
The ability of certain animals to locate objects by reflected sound.

Slang Meanings

To be fully aware of one's surroundings, akin to using sonar.
He’s got sonar for detecting trouble before it happens.
Figurative use for understanding complex situations, similar to navigating through sound waves.
She has great sonar when it comes to reading people.