ul·​tra·​short ˌəl-trə-ˈshȯrt How to pronounce ultrashort (audio)
: having a wavelength below 10 meters
ultrashort radiation
: very short in duration
an ultrashort pulse of light

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Example Sentences

Recent Examples on the Web 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 Modern ultrashort-pulse lasers provide a reliable means to create plasma remotely. David Hambling, Forbes, 6 July 2021 The trailblazing Jazz Age performer was said to have applied egg whites to her ultrashort hair to achieve a sleek, head-turning sheen. Katharine K. Zarrella, WSJ, 17 June 2021 Each of the dials is created by a single artisan using femtosecond, a new in-house laser technology using bursts of ultrashort laser pulses to imprint the design. Paige Reddinger, Robb Report, 7 Apr. 2021 In 1999, an Egyptian chemist, Ahmed Zewail, used ultrashort laser pulses to observe how molecules change their shape. NBC News, 19 Oct. 2020 Shelley Wright of UC San Diego hopes to see much farther with the Pulsed All-sky Near-infrared Optical SETI (PANOSETI), an all-sky telescope able to detect ultrashort laser pulses across all optical wavelengths. Daniel Clery, Science | AAAS, 10 Sep. 2020 Assets in mutual and exchange-traded funds that buy ultrashort-term debt rose to a record $174 billion in April, and inflows are near all-time highs, according to Morningstar. Daniel Kruger, WSJ, 9 May 2018 See More

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'ultrashort.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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Word History

First Known Use

1926, in the meaning defined at sense 1

Time Traveler
The first known use of ultrashort was in 1926

Dictionary Entries Near ultrashort

Cite this Entry

“Ultrashort.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/ultrashort. Accessed 29 Sep. 2022.

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