LEARNit Dictionary
ultrashort
adjective
/ˌʌltrəˈʃɔːt/
UK
/ˌʌltrəˈʃɔːrt/
US
1
having a very short wavelength (shorter than 10 metres), with a frequency greater than 30 megahertz
فراکوتاه, موج-بسیار-کوتاه, موج فراکوتاه
compare
long wave
,
medium wave
,
short wave