We found one dictionary that defines the word acousto-ultrasonic:

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1. acousto-ultrasonic: Wiktionary

Definitions from Wiktionary (acousto-ultrasonic) ▸ adjective:  Relating to acousto-ultrasonics. ▸ Words similar to acousto-ultrasonic ▸ Usage examples for acousto-ultrasonic ▸ Idioms related to acousto-ultrasonic ▸ Wikipedia articles (New!) ▸ Popular nouns described by acousto-ultrasonic ▸ Words that often appear near acousto-ultrasonic ▸ Rhymes of acousto-ultrasonic ▸ Invented words related to acousto-ultrasonic