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Definitions

circuit

[sur-kit] / ˈsɜr kɪt /
NOUN
revolution, track, boundary
Synonyms
STRONGEST
course district lap route tour
STRONG
ambit area bounds circle circling circulation circumference circumnavigation circumscription circumvolution compass cycle gyration gyre journey limit line orbit perambulation perimeter periphery range region round tract turn turning twirl way wheel whirl wind winding zone
Antonyms
STRONG
center inside interior middle

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.

The team is now working to identify specific components within the circuit that could be targeted with drugs.

From Science Daily • Apr. 3, 2026

Mortensen isn’t totally out of the reality TV circuit, though.

From Los Angeles Times • Apr. 3, 2026

Suzuka, which hosted the Japanese Grand Prix last weekend and is regarded as possibly the most challenging circuit on the calendar, was a test case for the new rules.

From BBC • Apr. 3, 2026

Rapanaro and four of his friends make up a team that is dominating the “Seinfeld” trivia circuit.

From The Wall Street Journal • Apr. 1, 2026

My travels on the speaking circuit took me to different corners of the United States.

From "Proud" by Ibtihaj Muhammad

From Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.