around the clock

1 of 2

phrase

variants or less commonly round the clock
1
: continuously for 24 hours : day and night without cessation
2
: without relaxation and heedless of time

around-the-clock

2 of 2

adjective

: being in effect, continuing, or lasting 24 hours a day : constant
around-the-clock surveillance

Examples of around the clock in a Sentence

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.
Adjective
Some advocates and researchers have been eager to increase recognition for this population, which often requires around-the-clock care but has routinely been overlooked by much of the existing research. O. Rose Broderick, STAT, 28 Apr. 2026 The site design also features restroom facilities, laundry machines, internet access and a secured perimeter with around-the-clock onsite security. Hannah Elsmore, San Diego Union-Tribune, 26 Apr. 2026 Her daughter, who suffered a catastrophic brain injury as a child, requires around-the-clock care, including a ventilator, feeding tube and seizure monitoring — which Root largely manages at home. Mike Hixenbaugh, NBC news, 23 Apr. 2026 After his relapse, Lawrence needed around-the-clock care. Luke Chinman, PEOPLE, 23 Apr. 2026 See All Example Sentences for around the clock

Word History

First Known Use

Phrase

1872, in the meaning defined at sense 1

Adjective

1915, in the meaning defined above

Time Traveler
The first known use of around the clock was in 1872

Browse Nearby Words

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Cite this Entry

“Around the clock.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/around%20the%20clock. Accessed 1 May. 2026.

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