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
China’s top automakers unveil cutting-edge models and technology at the Beijing auto show, highlighting advances in intelligent driving, ultrafast charging and electric vehicles.
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ABC News, 25 Apr. 2026
Recent advances in ultrafast measurement techniques have revealed that electron emission is not instantaneous, as once believed, but influenced by complex interactions within atoms.
—Prabhat Ranjan Mishra, Interesting Engineering, 6 Apr. 2026
View gallery - 4 images Elon Musk has previously promised the arrival of fully autonomous Teslas and ultrafast Hyperloop transport – both of which are yet to materialize.
—New Atlas, 23 Mar. 2026
Users can also check ultrafast delivery options on Amazon’s getitfast site.
—Annie Palmer, CNBC, 17 Mar. 2026
See All Example Sentences for ultrafast
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ABC News, 25 Apr. 2026
Recent advances in ultrafast measurement techniques have revealed that electron emission is not instantaneous, as once believed, but influenced by complex interactions within atoms.
—Prabhat Ranjan Mishra, Interesting Engineering, 6 Apr. 2026
View gallery - 4 images Elon Musk has previously promised the arrival of fully autonomous Teslas and ultrafast Hyperloop transport – both of which are yet to materialize.
—New Atlas, 23 Mar. 2026
Users can also check ultrafast delivery options on Amazon’s getitfast site.
—Annie Palmer, CNBC, 17 Mar. 2026
See All Example Sentences for ultrafast
Cite this Entry
“Ultrafast.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/ultrafast. Accessed 1 May. 2026.
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