time zone

noun

: a geographic region within which the same standard time is used

Illustration of time zone

Illustration of time zone
  • A Pacific time
  • B mountain time
  • C central time
  • D eastern time

Examples of time zone 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.
Understanding how many times that residential IP was used in different services can be difficult because a single residential IP address assigned to a time zone in Des Moines, Iowa, can be used by browsers from time zones all over the globe. Dan Pinto, Forbes.com, 15 Sep. 2026 Today, advancing technology, alongside tools like digital algorithms and AI agents, makes continuous trading across regions and time zones increasingly operational. CNBC, 14 Sep. 2026 Teams based in the Eastern or Central time zone often had the first game, while teams based in the Pacific or Mountain time zone played the later game. Saad Yousuf, New York Times, 14 Sep. 2026 Seattle’s defense is intact, and traveling across three time zones to play in that loud stadium will be a challenge for the Patriots. Los Angeles Times, 9 Sep. 2026 See All Example Sentences for time zone

Word History

First Known Use

1882, in the meaning defined above

Time Traveler
The first known use of time zone was in 1882

Browse Nearby Words

Cite this Entry

“Time zone.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/time%20zone. Accessed 19 Sep. 2026.

Kids Definition

time zone

noun
: a geographic region within which the same standard time is used

More from Merriam-Webster on time zone

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!