Definition of "isoline" []

• A line on a map, chart, or graph connecting points of equal value. Also called isogram. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "Major climate-related species distributions at the large scale include the limit of trees, which is associated with the isoline for mean July air temperatures of about 10 °C [3] (as discussed in [4]) and soil temperature of 7 °C [5], and the limit of woody plants such as dwarf shrubs that are one indicator of the boundary of the polar desert biome [6]."
• "A contour line is an isoline that connects points on a map that have the same elevation."
• "A rigorous, independent study conducted in the U.S. under controlled conditions demonstrated that Bt maize yields anywhere from 12% less to the same as near-isoline (highly similar) conventional varieties (Ma & Subedi, 2005)."