Definition, Meaning & Synonyms

isogone

noun

/ˈaɪsəɡoʊn/

Definition

A line on a map or chart representing points of equal magnetic declination.

Examples

The isogone on the map indicated areas where compass readings would be adjusted for accuracy.
Surveyors often refer to isogones when planning their routes to ensure proper measurements.
Understanding isogones can help aviators navigate more effectively in different regions.

Meaning

Isogone refers to the line that connects points with the same angle of magnetic declination, which is the angle between magnetic north and true north. This is significant in navigation and cartography.