Alternative form of Kármán line

plural of production line

(manufacturing) A set of sequential operations established in a factory whereby materials are put through a refining process or components are assembled to make a finished article.

Alternative form of battleline

plural of battle-line

plural of load line

(nautical) The line on the outside of a vessel indicating the depth to which it sinks in the water when loaded.

plural of bulkhead line

The guiding line, or outline, by which the form of a fortified work is determined. It is usually the crest line of the parapet in fieldworks, or the top line of the escarp in permanent fortifications.

plural of magistral line