[ uhl-truh-son-ik ]
See synonyms for ultrasonic on Thesaurus.com
  1. of, relating to, or utilizing ultrasound.

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Origin of ultrasonic

First recorded in 1925–30; ultra- + sonic

Other words from ultrasonic

  • ul·tra·son·i·cal·ly, adverb

Words Nearby ultrasonic

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use ultrasonic in a sentence

  • The Guide aimed quickly and pressed the trigger of the ultrasonic stunner.

    Hunter Patrol | Henry Beam Piper and John J. McGuire
  • It carried an outsize ultrasonic generator and a device for directing the beam into the planet.

    Student Body | Floyd L. Wallace
  • Most of them carried ultrasonic paralyzers, eighteen-inch batonlike things with bulbous ends.

    Temple Trouble | Henry Beam Piper
  • Immediately, the ultrasonic paralyzers of the advancing paratimers went into action, and the mercenaries began dropping.

    Temple Trouble | Henry Beam Piper
  • Has an ultrasonic dishwasher underneath, and it does some cooking on top, at the back.

    Space Viking | Henry Beam Piper

British Dictionary definitions for ultrasonic


/ (ˌʌltrəˈsɒnɪk) /

  1. of, concerned with, or producing waves with the same nature as sound waves but frequencies above audio frequencies: See also ultrasound

Derived forms of ultrasonic

  • ultrasonically, adverb

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012