Ultrasonic: [adjective] having a frequency above the human ear's audibility limit of about 20,000 hertz. Ozonici(Italian)AdjectiveozoniciMasculine plural of ozonico. ozonico(Italian)Origin & historyFrom ozono + ozonide(English)Origin & historyozone + -ideNounozonide ozonides(English)NounozonidesPlural of ozonideAnagrams ozoniez(French)VerbozoniezInflection of ozoner.