Skip to main content
mainline

mainline

16 4.2
A main route like a train line or a large water pipe
  • noun
  • /ˈmeɪnˌlaɪn/
translation icon : línea principal
  • I think of them as conductors on the Boston mainline.
  • mainline Protestants
  • mainline denominations
  • mainline churches

Examples

  • So there are seven mainline railway stations in Paris.

  • The anti-abortion campaign separates Catholics from most mainline Protestants, but it unites them with evangelicals.

    Academic text (2011)
  • Since then, while the number of American Christians has grown, membership in the mainline denominations has sharply dropped.

    Academic text (2006)
  • The membership of the liberal, historically dominant mainline Protestant churches mostly peaked in the 1960s.

    Academic text (2006)
  • There are seven mainline railway stations that serve as key hubs in Paris's transport system.

  • The Boston mainline is a crucial route for commuters traveling into the city.

  • In the new utility plan, the mainline will distribute water through the entire neighborhood.

Synonyms

route
vsmainline
1.0

A road or path people use to travel between places

refers to the principal channel in a system rather than any path
main line
vsmainline
7 3.2

The most important railway route used by trains

is written as one word rather than two
trunk line
vsmainline
5.1

A main train route that connects important towns and cities

applies to principal routes generally, not only major connections
trunk route
vsmainline
  • UK
5.7

Main railway line that carries most trains between big cities

focuses on heavy traffic flow rather than general principal role

How Important

backbone
  • Specialized
17 5.0
mainline
16 4.2
branch line
1 3.9

Surface Forms

mainline singular
mainlines plural

Morphology

mainline = main + line (transparent) = main + line

The meaning is directly compositional: a 'main line' is the principal line or route in a system.

Etymology

Mainline: The noun mainline comes from the words main 'most important' and line 'route' and was first used for big railway tracks or pipes, so a mainline is the main route or channel in a system.