ultrasound

== English == === Etymology === From ultra- +‎ sound. === Pronunciation === === Noun === ultrasound (countable and uncountable, plural ultrasounds) (physics) Sound with a frequency greater than the upper limit of human hearing, which is approximately 20 kilohertz. Antonym: infrasound Hypernym: sound (metonymic, chiefly informal) Ultrasonography. Medical ultrasonography. Therapeutically applied ultrasonic energy. ==== Derived terms ==== ==== Related terms ==== ultrasonic, ultrasonics ==== Translations ==== === Verb === ultrasound (third-person singular simple present ultrasounds, present participle ultrasounding, simple past and past participle ultrasounded) (ambitransitive) To treat with ultrasound. ==== Hyponyms ==== ultrasonicate === Anagrams === undulators