ISOGONIC
isogonic
(adjective) having or making equal angles
Source: WordNet® 3.1
Etymology
Adjective
isogonic (comparative more isogonic, superlative most isogonic)
(cartography, navigation) Describing imaginary lines connecting points on the Earth's surface of identical magnetic declination.
Synonym: isogonal
(geometry) Having equal angles.
Synonym: isogonal
(zoology) Exhibiting, or relating to, isogonism.
Noun
isogonic (plural isogonics)
(cartography, navigation) A line connecting points on the Earth's surface whose magnetic declination is identical.
Source: Wiktionary
I`so*gon"ic, a. Etym: [Iso- + Gr.
Definition: 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.
I`so*gon"ic, a. (Zoöl.)
Definition: Characterized by isogonism.
Source: Webster’s Unabridged Dictionary 1913 Edition