ultrashortEnglishOxford New American Dictionaryultrashort /ˌəltrəˈSHôrt, ˌəltrəˈʃɔrt / ▸ adjective (of radio waves) having a wavelength significantly shorter than that of the usual shortwaves, in particular shorter than 10 meters (i.e., of a VHF frequency above 30 MHz).
EnglishOxford New American Dictionary
