I`so*gon"ic (?), a. [Iso- + Gr. angle.]
Pertaining to, or noting, equal angles.
Isogonic lines Magnetism, lines traced on the surface of the globe, or upon a chart, connecting places at which the deviation of the magnetic needle from the meridian or true north is the same.
© Webster 1913.
I`so*gon"ic, a. Zool.
Characterized by isogonism.
© Webster 1913.