plural of Frauenhofer's line

Alternative form of Fraunhofer line

(linguistics) In German dialectology, an isogloss separating the Central German dialects to the north (which have a stop in words like Appel (“apple”)) from the Upper German dialects to the south (which have an affricate).

(rail transport) A secondary route which leaves a mainline, following a different route to the main line, before rejoining it several miles further on.

plural of loop line

Of first resort. / Of prime quality or importance. / At the lowermost supervisory level.

Of second resort. / Of mediocre quality or peripheral importance. / At the next-to-lowest supervisory level.

(military) The networks of land, water, and air routes that connects a battlefield and its military personnel, supplies, etc. / A chain of communications through an established system.

Alternative form of line of communication

plural of peace line