Aclinic

• (a.) Without inclination or dipping; -- said the magnetic needle balances itself horizontally, having no dip. The aclinic line is also termed the magnetic equator.
Found on http://thinkexist.com/dictionary/meaning/aclinic/

Aclinic

A·clin'ic adjective [ Greek 'a priv. + ... to incline.] (Physics.) Without inclination or dipping; - - said the magnetic needle balances itself horizontally, having no dip. The aclinic line is also termed the magnetic equator . Prof. August.
Found on http://www.encyclo.co.uk/webster/A/20

aclinic

having no inclination or magnetic dip
Found on http://phrontistery.info/a.html

Aclinic

The aclinic is a magnetic equator.
Found on http://www.probertencyclopaedia.com/browse/GA.HTM
No exact match found