uptime

noun

up·​time ˈəp-ˌtīm How to pronounce uptime (audio)
: 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.
The approach could also increase operational uptime and reduce the need for large power systems aboard satellites. — Neetika Walter, Interesting Engineering, 24 Aug. 2026 Platforms must be engineered from the first line of code for uptime, security, auditability, legacy integration, disparate data sources and consistent performance across thousands of transactions under regulatory scrutiny. — Bratin Saha, Forbes.com, 21 Aug. 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

Rhymes for uptime

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Browse Nearby Words

uptilt
uptime
up to
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Cite this Entry

“Uptime.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/uptime. Accessed 1 Sep. 2026.

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