Definition of ultrashort adjective from the Oxford Advanced Learner's Dictionary



BrE BrE//ˌʌltrəˈʃɔːt//
; NAmE NAmE//ˌʌltrəˈʃɔːrt//
jump to other results
(of radio waves) having a very short wavelength (shorter than 10 metres), with a frequency greater than 30 megahertz compare long wave, medium wave, short wave
See the Oxford Advanced American Dictionary entry: ultrashort