periodically
Americanadverb
-
at irregular intervals of time; intermittently.
Internships of various types are available periodically.
You will need to recharge the battery periodically; the recharge interval will vary depending upon use.
-
at regular or somewhat regular intervals of time.
By periodically—perhaps monthly—performing this test, you can quantitatively assess the impact of your training.
Other Word Forms
- nonperodically adverb
- quasi-periodically adverb
- unperiodically adverb
Etymology
Origin of periodically
Explanation
When you do something periodically, you do it either occasionally or at regular intervals. Do you talk to your grandmother once every week or two? Then you can say you call her periodically. It's easy to get to the bottom of periodically by looking at the word period, in its sense of "course or extent of time." When things happen periodically, they occur after a period of time has passed, either a random length of time or a more regular interval: "That bird shows up at my window periodically" or "He periodically opens and closes the blinds just as the sun rises and sets."
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
Kepler also identified around 3,000 eclipsing binary systems, where one star periodically passes in front of the other.
From Science Daily • Apr. 19, 2026
“Some of the larger risks are much like tectonic plates, always moving and periodically causing earthquakes and volcanoes when they crash into each other,” he said.
From Barron's • Apr. 6, 2026
State law requires schools to periodically check kids’ vision starting in kindergarten.
From Los Angeles Times • Apr. 4, 2026
While the two have sparred periodically about policy over the last decade, they have also appeared to bond at public events.
From The Wall Street Journal • Apr. 3, 2026
He periodically checked their accuracy by taking a kind of astronomical reading called an occultation.
From "Shipwreck at the Bottom of the World" by Jennifer Armstrong
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
