aclinic line
noun
aclin·ic line
| \ (ˈ)ā-¦kli-nik-\
Definition of aclinic line
: an imaginary line on the earth's surface roughly parallel to the geographical equator and passing through those points where a magnetic needle if suspended freely has no dip or inclination and assumes a horizontal position
— called also magnetic equator
— compare agonic line, isoclinic lineKeep scrolling for more