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Definitions

mainline

[meyn-lahyn, -lahyn] / ˈmeɪnˌlaɪn, -ˈlaɪn /


VERB
inject
Synonyms
Antonyms


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 service is installed on more than 300 of those planes but just 18 of its mainline jets.

From The Wall Street Journal • Apr. 1, 2026

The genius of hit songs, beyond technical artistry—and the vagaries of timing—is the ability to mainline emotion.

From The Wall Street Journal • Mar. 5, 2026

The 04:28 Avanti West Coast service came off the tracks on the West Coast mainline at Shap in Cumbria on Monday morning after travelling at speeds of 80mph.

From BBC • Nov. 4, 2025

He used to present as a staid mainline Episcopalian, but now he denounces that church and speaks of being “mauled by demons.”

From Salon • May 19, 2025

But over the last forty years, evangelicals have pulled steadily closer in income and education to mainline Protestants in the historically affluent establishment denominations.

From "Class Matters" by The New York Times