ultrashort

[ uhl-truh-shawrt ]

adjective

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

ultrashort

/ ˌʌltrəˈʃɔːt /

adjective

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

Word History and Origins

Origin of ultrashort¹

First recorded in 1925–30; ultra- + short

Example Sentences

This “ultrashort-period” planet has a tight orbit, with a year lasting only eight hours—alien birthday parties there would accumulate so fast they’d get very tedious.

From Popular-Science

That makes it the first ultrashort-period planet — a class of worlds with years shorter than one Earth day and with mysterious origins — known to be smaller and lighter than Earth.

From Science News

If you’re wondering why anyone would bother, there are a few ways scientists can put ultrashort pulses to work.

From Popular-Science