The Collaborative International Dictionary
magnetic equator
magnetic equator \magnetic equator\ n. An imaginary line paralleling the equator where a magnetic needle has no dip, the dipping needle being horizontal; called also aclinic line.
Wiktionary
magnetic equator
n. (context military English) A line drawn on a map or chart connecting all points at which the magnetic inclination (dip) is zero for a specified epoch.
WordNet
magnetic equator
n. an imaginary line paralleling the equator where a magnetic needle has no dip [syn: aclinic line]
Usage examples of "magnetic equator".
To land her here, not far from the magnetic equator, her captain must have been a spaceman of no mean order—.