American English

Definition of ultrashort adjective from the Oxford Advanced American Dictionary

 

ultrashort

 adjective
adjective
NAmE//ˌʌltrəˈʃɔrt//
 
 
jump to other results
(of radio waves) having a very short wavelength (shorter than 10 meters), with a frequency greater than 30 megahertz compare long wave, medium wave, shortwave
See the Oxford Advanced Learner's Dictionary entry: ultrashort