sonar
UK/'səʊnɑː(r)/US/'sәunɑ:/
A1
Definitions
n.
A system that uses pulses of sound to detect and locate underwater objects
声呐，水下声波探测系统
Root Breakdown
BlendAn acronym, not a normal derivative: SO(und) NA(vigation) (and) R(anging). The 'so' carries the son 'sound' idea — sonar maps the dark of the ocean entirely by sound, the way a submarine 'sees' with its ears.
Root son still carries 22 more wordsCommon Collocations
- 1.sonar system声呐系统
- 2.active sonar主动声呐
- 3.passive sonar被动声呐
- 4.sonar detection声呐探测
Example Sentences
- 1.
The submarine used sonar to map the ocean floor.
- 2.
Dolphins navigate with a natural form of sonar.