reliability

noun

re·​li·​abil·​i·​ty ri-ˌlī-ə-ˈbi-lə-tē How to pronounce reliability (audio)
1
: the quality or state of being reliable
2
: the extent to which an experiment, test, or measuring procedure yields the same results on repeated trials

Examples of reliability in a Sentence

we never had reason to question the reliability of the park rangers in the event of an emergency
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.
More than just engineering better turbines or blending fuels, this is about powering a new era where reliability and sustainability go hand-in-hand. Javier Cavada, Forbes.com, 21 July 2025 At her direction, the state’s clean energy efforts are being driven by three main priorities: affordability, sustainability, and grid reliability. Doreen M. Harris, New York Daily News, 20 July 2025 The state's power grid ranks No. 40 for reliability. Scott Cohn, CNBC, 18 July 2025 Touted for its longer range between charges and reliability in low temperatures, high-nickel battery cells continue to dominate the U.S. market. Stuart Dyos, The Tennessean, 18 July 2025 See All Example Sentences for reliability

Word History

First Known Use

1810, in the meaning defined at sense 1

Time Traveler
The first known use of reliability was in 1810

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Cite this Entry

“Reliability.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/reliability. Accessed 25 Jul. 2025.

Kids Definition

reliability

noun
re·​li·​abil·​i·​ty ri-ˌlī-ə-ˈbil-ət-ē How to pronounce reliability (audio)
plural reliabilities
: the quality or state of being reliable

Medical Definition

reliability

noun
re·​li·​abil·​i·​ty ri-ˌlī-ə-ˈbil-ət-ē How to pronounce reliability (audio)
plural reliabilities
: the extent to which an experiment, test, or measuring procedure yields the same results on repeated trials

More from Merriam-Webster on reliability

Last Updated: - Updated example sentences
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