contour line

(redirected from Halleyan line)
Also found in: Dictionary, Thesaurus.

contour line

a line on a map or chart joining points of equal height or depth
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005

contour line

[′kän‚tu̇r ‚līn]
(mapping)
A map line representing a contour, that is, connecting points of equal elevation above or below a datum plane, usually mean sea level. Also known as contour; isoheight; isohypse.
(meteorology)
A line on a weather map connecting points of equal atmospheric pressure, temperature, or such.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.

contour line

contour lines
A line on a map or drawing representing points of equal elevation on the ground.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.