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Showing results for ultrasonic. Search instead for ultrafic.
Definitions

ultrasonic

[uhl-truh-son-ik] / ˌʌl trəˈsɒn ɪk /
ADJECTIVE
speedy
Synonyms
STRONGEST
accelerated brisk expeditious hasty hurried immediate prompt rapid swift
WEAK
agile alacritous breakneck express fleet harefooted headlong lissome lively nimble precipitate quick-fire rapid-fire ready snappy split-second summary supersonic winged
Antonyms
STRONGEST
delayed leisurely slow sluggish
WEAK
halted slowed tardy

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

The Afeela 1 was equipped with 18 cameras, nine radars, 12 ultrasonic sensors and lidar — allowing it to qualify for level two autonomy, which requires a driver in control.

From Los Angeles Times • Mar. 26, 2026

Scientists at the University of Oxford say ultrasonic sound devices might one day help reduce the number of hedgehogs killed by cars.

From Science Daily • Mar. 12, 2026

And how long before this hyperbaric, ultrasonic sewing machine spins a bobbin?

From The Wall Street Journal • Feb. 12, 2026

He added the ultrasonic speakers are lowered into the seabed "a bit like a lobster pot".

From BBC • Feb. 10, 2026

The repellant effect of bursts of ultrasonic sound is being tested in Canada against corn borer and cutworm moths.

From "Silent Spring" by Rachel Carson