: time during which a piece of equipment (such as a computer) is functioning or able to function

Examples of uptime in a Sentence

We need to maximize network uptime.
Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
This laptop blew past most of the competition with an impressive 37 hours and 3 minutes of uptime on a single charge. — Marshall Honorof, PC Magazine, 3 Oct. 2026 In these environments, uptime and adoption are measured as revenue metrics. — Mike Trkay, Forbes.com, 29 Sep. 2026 The system is also supposed to work through the day and night, in temperatures from -10°F to 120°F, while maintaining at least 95% uptime. — Rashad Williams, CBS News, 16 Sep. 2026 Fleet managers don’t care about sleek aesthetics, but more about uptime and resale value. — Mrigakshi Dixit, Interesting Engineering, 15 Sep. 2026 See All Example Sentences for uptime

Word History

First Known Use

1958, in the meaning defined above

Time Traveler
The first known use of uptime was in 1958

Browse Nearby Words

Cite this Entry

“Uptime.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/uptime. Accessed 8 Oct. 2026.

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