sonar
Artificial echolocation by use of electronic equipment, with hydrophones to locate objects underwater, using the same wave-analysis principles that radar uses.
Other meanings
A device that provides such echolocation.
“They finally bought a new sonar to replace the 40-year-old unit that sometimes didn't work right.”
Any echolocation.
“Submarines and bats both use sonar to navigate.”
Related words
- antisonar
- sonarlike
- sonarman
- Doppler sonar
- active sonar
Example sentences
Where this comes from
This definition is adapted from “sonar” on Wiktionary, by its contributors; example sentences are from Tatoeba, credited to their authors above, published under CC BY-SA 4.0. This page is published under the same licence.