adjective
- relating to or denoting a line on the Earth's surface where the magnetic needle has no inclination and points horizontally
Usage: technical; geography/geophysics
Examples
- The aclinic line runs roughly along the geographic equator.
- Navigators must account for magnetic variation when crossing the aclinic line.
- At the aclinic line, a compass needle remains horizontal rather than dipping.
- The position of the aclinic line shifts slowly over geological time.
- Ships traveling along the aclinic line experience minimal magnetic inclination.