Definition of sonar
: a method or device for detecting and locating objects especially underwater by means of sound waves sent out to be reflected by the objects; also : a device for detecting the presence of a vessel (such as a submarine) by the sound it emits in water
Examples of sonar in a Sentence
They detected the submarine by using sonar.
Recent Examples of sonar from the Web
Huynh, a sonar technician 3rd class and a former resident of the Oakville section of Watertown, was one of seven sailors killed in the collision off the coast of Japan.
The new geophysical data, acquired using state-of-the-art shipboard sonar and published online earlier this year in Eos, span 2,500 kilometers of seabed.
Using extremely sensitive sonar machines, the LSU team was able to find an area with large numbers of trees that were still entirely buried in layers of sediment.
Hundreds of anchored hooks make them dangerous places for fish, and boats use tech like sonar and GPS to ensure an even more efficient catch.
Sonar lacked protocols for equipment cleaning and maintenance, as well as for quality assurance checks on the raw materials and finished products.
Instead of installing modern radars, sonar, and other expensive, high-end sensors, the Perry would instead function as a wingman to existing destroyers and cruisers.
In one, the USNS Invincible, a ship equipped with sonar and radar, was forced to change course to avoid Iranian Revolutionary Guard fast boats that cut in front of the ship.
The Premium Plus Package tacked on a navigation system, the Infiniti Around View Monitor, and front and rear sonar parking aid.
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'sonar'. Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
Origin and Etymology of sonar
sound navigation ranging
First Known Use: 1944See Words from the same year
SONAR Defined for English Language Learners
Definition of sonar for English Language Learners
: a device used for finding things that are underwater by using sound waves
SONAR Defined for Kids
Definition of sonar for Students
: a device for detecting objects underwater using reflected sound waves
Seen and Heard
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