sonar

UK: ˈsəʊ.nɑː | US: ˈsoʊ.nɑːr

Definition

  1. n. a system for detecting objects underwater by emitting sound pulses and measuring their return after reflection.

Structure
son <sound>ar <noun suffix>
Etymology

sonar = son<sound> + ar<noun suffix>

  • son<sound>: From Latin sonus (sound), reflecting the word’s reliance on sound waves.
  • ar<noun suffix>: A suffix used to form nouns denoting instruments or systems (e.g., radar).

Etymology Origin:
Coined in the mid-20th century as an acronym for SOund NAvigation Ranging, sonar mimics the structure of radar (Radio Detection and Ranging). The morphemes were later reinterpreted to align with Latin sonus (sound), reinforcing its function as a sound-based detection tool.

Examples

  1. The submarine used sonar to locate the shipwreck.

  2. Marine biologists employ sonar to study whale migrations.

  3. The device’s sonar capabilities help avoid underwater obstacles.

  4. Modern fishing boats rely on advanced sonar technology.

  5. Scientists analyzed the sonar data to map the ocean floor.