ultrashort

adjective

ul·​tra·​short ˌəl-trə-ˈshȯrt 

1

: having a wavelength below 10 meters

ultrashort radiation

2

: very short in duration

an ultrashort pulse of light

Examples of ultrashort in a Sentence

Recent Examples on the Web

Much of the recent bond flow has been going into ultrashort Treasuries, and evaluating those flows is a major focus for the conference. —Bob Pisani, CNBC, 24 Mar. 2025

Pico refers to the speed at which the laser fires, in a picosecond, delivering ultrashort energy pulses which are safe for all skin tones. —Amber Gibson, Glamour, 21 Oct. 2024

So how do physicists use these ultrashort pulses to make movies of electrons at the attosecond scale? —Niranjan Shivaram, The Conversation, 4 Oct. 2023

Earlier in the pandemic, start-ups offered ultrashort-term rentals of hotels and homes for work calls and naps. —Curbed, 18 Mar. 2022

Mourou suggested stretching an ultrashort pulse of light of low energy, amplifying it and then compressing it. —Donna Strickland, Discover Magazine, 14 Jan. 2019

Now, ultrashort-term U.S. debt is by far the best option. —Derek Horstmeyer, WSJ, 3 Dec. 2022

Walking through this collection, Lenny ran fingers along ultrashort tow-in surfboards and 10-foot paddle-in boards with strangely bulbous front ends. —Daniel Duane, Wired, 23 Dec. 2021

But further studies of Mercury, along with more observations and discoveries of ultrashort-period planets using next-generation facilities such as the James Webb Space Telescope, could get us closer to an answer of how such worlds come to be. —Jonathan O'Callaghan, Scientific American, 2 Dec. 2021

Word History

First Known Use

1926, in the meaning defined at sense 1

Rhymes for ultrashort

• heliport
• nonsupport
• reexport
• teleport
• abort
• airport
• alport
• athwart
• carport
• comport
• consort
• deport