1
: utilizing, produced by, or relating to sound waves
sonic altimeter
broadly : of or involving sound
sonic pollution
2
: having a frequency within the audibility range of the human ear
—used of waves and vibrations
3
: of, relating to, or being the speed of sound in air or about 761 miles per hour (1224 kilometers per hour) at sea level at 59°F (15°C)

Did you know?

A sonic boom is an explosive sound created by a shock wave formed at the nose of an aircraft. In 1947 a plane piloted by Chuck Yeager burst the "sound barrier" and created the first sonic boom. In the decades afterward sonic booms became a familiar sound to Americans. (Because of steps that were eventually taken, sonic booms are rarely heard anymore.) Today sonic is often used by ambitious rock musicians to describe their experimental sounds.

Examples of sonic in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Together, the 24 songs make for a stellar one-and-a-half hour long sonic journey. — Kyle Denis, Billboard, 18 Sep. 2026 Dragonflies is the kind of sonic-rich adventure oozing with layers of atmospheric soundscape fantasy. — Charles Moss, SPIN, 16 Sep. 2026 This is his full-time home now, after years of living in Brooklyn and almost two decades and seven albums of chasing American sonic traditions. — Marissa R. Moss, Rolling Stone, 8 Sep. 2026 The album solidified Jepsen as much more than a one-note artist, pushing the boundaries of what mainstream pop could be with risky sonic choices. — Nicole Fell, HollywoodReporter, 8 Sep. 2026 See All Example Sentences for sonic

Word History

First Known Use

1918, in the meaning defined at sense 1

Time Traveler
The first known use of sonic was in 1918

Browse Nearby Words

Cite this Entry

“Sonic.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/sonic. Accessed 26 Sep. 2026.

Kids Definition

sonic

adjective
: using, produced by, or relating to sound waves

Medical Definition

sonic

adjective
1
: having a frequency within the audibility range of the human ear
—used of waves and vibrations
2
: utilizing, produced by, or relating to sound waves
a sonic device used to rupture cell walls
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!