%isoclinic%

{ } a. [ Iso- + Gr. &unr_; to incline. ] Of or pertaining to, or indicating, equality of inclination or dip; having equal inclination or dip. [ 1913 Webster ]

Isoclinal lines (Magnetism), lines on the earth's surface connecting places at which a dipping needle indicates the same inclination or dip. [ 1913 Webster ]