say it: uhl-truh-SAH-nik
ultrasonic is an adjective meaning "having frequencies above those of audible sound". It carries one recorded sense.
having frequencies above those of audible sound
Definitions, synonyms and semantic relations for ultrasonic come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.