ultrasonic

Definitions

ultra- (beyond) + sonic = 'sound beyond' — beyond the pitch human ears can detect. Not about speed (that's supersonic) but about frequency, the way bats and ultrasound scanners use it.

Common Collocations

• 1.ultrasonic waves超声波
• 2.ultrasonic sensor超声波传感器
• 3.ultrasonic cleaner超声波清洗机

Example Sentences

• 1.

  Bats hunt using ultrasonic squeaks too high for us to hear.

• 2.

  The jeweller cleaned the rings in an ultrasonic bath.