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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 train operator LNER, which runs the east coast mainline, has extended its advice to passengers not to travel between Edinburgh and Aberdeen as they "cannot guarantee" trains will operate until Friday at the earliest.

From BBC • Jan. 6, 2026

The tax burden would be disproportionately felt by progressive mainline Protestant churches, Black evangelical churches and immigrant-majority Catholic and Protestant congregations, not to mention immigrant-majority mosques and temples.

From Salon • Nov. 16, 2025

In July, Alaska canceled dozens of flights, or about 10% of its mainline schedule, after a critical piece of hardware at a data center failed, bringing down airline systems.

From The Wall Street Journal • Oct. 24, 2025

On being told of Tilly’s existence by an interviewer for Variety, “Please stop,” she insisted, while demanding that mainline studios and talent agencies refrain from trafficking with AI actresses.

From The Wall Street Journal • Oct. 10, 2025

Black Muslims came in many stripes, from mainline Nation of Islam to the splinter Five Percenters.

From "Newjack: Guarding Sing Sing" by Ted Conover