level line

noun

1. contour line.

Word History and Origins

Origin of level line¹

First recorded in 1660–70

Example Sentences

XXXV., 145 and we must fill up the intervals between the semicircle so as to obtain a level line of support.

From Project Gutenberg

But both a transit and a level line must be run over this barren region, and the distance must be carefully measured.

From Project Gutenberg

I saw it as it came on a straight, level line from the east; a flash like a meteor of glistening white.

From Project Gutenberg

A level line will answer, but a tapered one is better adapted for long casts.

From Project Gutenberg

Far ahead the merest bulge broke the level line where sky and waters met.

From Project Gutenberg