ultrafast
adjective
ul·tra·fast
ˌəl-trə-ˈfast 
: extremely or extraordinarily fast
ultrafast trains
ultrafast speeds
an ultrafast wireless connection
Examples of ultrafast in a Sentence
Recent Examples on the Web
Even under ultrafast cycling at 5 C, the dual-shell design held more than 80% of its capacity.
—
Neetika Walter, Interesting Engineering, 30 Aug. 2025
Quiet, atmospheric scenes are punctuated with moments of ultrafast violence, elongated limbs sweeping the page like springs released from tension.
—Matt Alt, New Yorker, 25 Aug. 2025
The simplified chip is analog rather than digital, yet can process ultrafast data and wireless communication signals simultaneously.
—New Atlas, 21 Aug. 2025
This novel state of matter is a metallic phase in an otherwise insulating compound that can only be accessed by using ultrafast lasers.
—Meghie Rodrigues, IEEE Spectrum, 23 July 2025
See All Example Sentences for ultrafast
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Neetika Walter, Interesting Engineering, 30 Aug. 2025
Quiet, atmospheric scenes are punctuated with moments of ultrafast violence, elongated limbs sweeping the page like springs released from tension.
—Matt Alt, New Yorker, 25 Aug. 2025
The simplified chip is analog rather than digital, yet can process ultrafast data and wireless communication signals simultaneously.
—New Atlas, 21 Aug. 2025
This novel state of matter is a metallic phase in an otherwise insulating compound that can only be accessed by using ultrafast lasers.
—Meghie Rodrigues, IEEE Spectrum, 23 July 2025
See All Example Sentences for ultrafast
Cite this Entry
“Ultrafast.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/ultrafast. Accessed 5 Sep. 2025.
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