periodic

[peer-ee-od-ik] / ˌpɪər iˈɒd ɪk /

ADJECTIVE

at fixed intervals

Synonyms

STRONGEST

annual intermittent monthly occasional recurrent recurring regular repeated routine seasonal sporadic weekly yearly

STRONG

periodical

WEAK

alternate at various times centennial cyclic cyclical daily epochal every once in a while every so often fluctuating hourly infrequent isochronal isochronous on certain occasions on-again-off-again orbital perennial rhythmic serial spasmodic

Antonyms

STRONGEST

constant infrequent unusual

WEAK

continual irregular lasting permanent sporadic variable

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.

That is the quarterly limit investors agreed to when they committed their capital to the nontraded fund, which provides periodic liquidity by repurchasing some investor shares.

From Barron's • Apr. 2, 2026

The explanation traces back to work by the French mathematician Gaston Floquet, who showed in the 19th century that systems exposed to periodic forces can develop entirely new oscillation states.

From Science Daily • Mar. 27, 2026

Proton’s open-source apps are subject to periodic security audits, which play a role in shaping Proton VPN’s development.

From Salon • Mar. 21, 2026

Just under 100 ships have passed through the Strait of Hormuz since the start of March, according to data analysed by BBC Verify, despite periodic attacks on shipping in the area by Iranian forces.

From BBC • Mar. 19, 2026

He even said something about a periodic table, or some crazy thing.

From "Because of Mr. Terupt" by Rob Buyea

Vocabulary lists containing periodic

Freak the Mighty

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Word Generation Science - Introductory Chemistry Concepts

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Essential English Vocabulary, List 3

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