adj
ultrasonic
uhlt-ruh-SO-nihk
adj
1
Having a sound frequency higher than what humans can hear, generally above 20 kilohertz.
"Bats navigate using ultrasonic sound waves."
"The device emits an ultrasonic pulse to measure distance."
How to Use Ultrasonic
Learner’s notesIn plain EnglishSound pitched too high for human ears to detect.
Easily confused with
Word Forms
more ultrasonic comparative, most ultrasonic superlative
Study it as flashcards or scroll it in Flow — saved to your collection.
Test yourself on “ultrasonic”
A quick quiz — meaning, synonyms & usage
→
Fill the Gap
Can you complete this real example?
Bats navigate using _____ sound waves.
Etymology
From "ultra-" ("beyond") plus "sonic" ("relating to sound").