Synonyms of periodicnext
1
a
: occurring or recurring at regular intervals
b
: occurring repeatedly from time to time
2
a
: consisting of or containing a series of repeated stages, processes, or digits : cyclic
periodic decimals
a periodic vibration
b
: being a function any value of which recurs at regular intervals
3
: expressed in or characterized by periodic sentences

Examples of periodic in a Sentence

He takes the car in for periodic oil changes. sent out periodic reminders about the office dress code
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.
And periodic ceasefires during the war sent global oil prices lower – only to rise again whenever those agreements have lapsed or run out. Ramishah Maruf, CNN Money, 25 Aug. 2026 Responses to pain, such as heat, dropped throughout the different mouse models that underwent periodic fasting, as did cognitive deficits. Mike McRae 25, New Atlas, 25 Aug. 2026 El Nino is a periodic warming of water in the central and eastern equatorial Pacific Ocean that can affect global weather patterns for months, according to AccuWeather. Stephen Underwood, Hartford Courant, 24 Aug. 2026 This year's El Niño, a natural and periodic warming cycle, is expected to be the strongest ever recorded, which could push temperatures even higher, breaking records and leaving damage along the way. ABC News, 24 Aug. 2026 See All Example Sentences for periodic

Word History

First Known Use

1650, in the meaning defined at sense 1a

Time Traveler
The first known use of periodic was in 1650

Browse Nearby Words

Cite this Entry

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

Kids Definition

periodic

adjective
1
: occurring at regular intervals
2
: consisting of or containing a series of repeated stages
periodic vibrations

Medical Definition

periodic

adjective
: occurring or recurring at regular intervals
periodic epidemics
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