Transonic and Ultrasonic

Transonic adjective - (of speed) having or caused by speed approximately equal to that of sound in air at sea level.

Ultrasonic and transonic are semantically related. In some cases you can replace term "Ultrasonic" with "Transonic", this adjectives are similar.

Ultrasonic adjective - Having frequencies above those of audible sound.

Transonic and ultrasonic are semantically related. Sometimes you can replace term "Transonic" with "Ultrasonic", this adjectives are similar.

Nearby Word: ultrasonics