ultrashort

[ uhl-truh-shawrt ]
/ ˌʌl trəˈʃɔrt /

adjective

extremely short.
(of a wavelength) smaller than 10 meters.

Origin of ultrashort

First recorded in 1925–30; ultra- + short

Words nearby ultrashort

ultranet, ultrapure, ultrared, ultraright, ultrarightist, ultrashort, ultrasonic, ultrasonic cleaning, ultrasonic testing, ultrasonic welding, ultrasonics

British Dictionary definitions for ultrashort

ultrashort
/ (ˌʌltrəˈʃɔːt) /

adjective

(of a radio wave) having a wavelength shorter than 10 metres