ul·​tra·​short | \ ˌəl-trə-ˈshȯrt How to pronounce ultrashort (audio) \

Definition of ultrashort

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 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

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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First Known Use of ultrashort

1926, in the meaning defined at sense 1

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The first known use of ultrashort was in 1926

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Cite this Entry

“Ultrashort.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/ultrashort. Accessed 18 Jun. 2021.

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