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English
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sonar

|so/nar|

B2

🇺🇸

/ˈsoʊnɑr/

🇬🇧

/ˈsəʊnɑː/

underwater detection

Etymology
Etymology Information

'sonar' originates from English, specifically the acronym 'SOund Navigation And Ranging'.

Historical Evolution

The term 'sonar' was coined during World War II as a counterpart to 'radar', which stands for 'RAdio Detection And Ranging'.

Meaning Changes

Initially, it was used primarily in military contexts, but now it is also used in civilian applications such as fishing and oceanography.

Meanings by Part of Speech

Noun 1

a system for detecting objects underwater by emitting sound pulses and detecting or measuring their return after being reflected.

The submarine used sonar to locate the enemy vessel.

Synonyms

echo sounderdepth finder

Examples

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Last updated: 2025/01/11 11:45