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 (ī′sə-gŏn′ĭk) also i·sog·o·nal (ī-sŏg′ə-nəl)
Having equal angles.


(ˌaɪsəʊˈɡɒnɪk) or


(Mathematics) maths having, making, or involving equal angles
(Physical Geography) physics Also called: isogonic line, isogonal line or isogone an imaginary line connecting points on the earth's surface having equal magnetic declination


(ˌaɪ səˈgɒn ɪk)

1. having or pertaining to equal angles.
2. noting or pertaining to an isogonal line.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Adj.1.isogonic - having or making equal angles
angulate, angular - having angles or an angular shape
References in periodicals archive ?
The upshot is that the isogonic lines showing magnetic variation on sectional charts shift more dramatically each time these updates are applied.
Many other presentations contributed accounts of little known or unknown artefacts, for example the MS chart of isogonic lines c.
The neck cut showed a isogonic behavior, as well as ribs in all treatments (Table 2), that is, these cuts showed a proportional growth to the cold carcass (b = 1), corroborating Rota et al.
2009) noted that research has shown that body component development in lamb may be precocious, delayed or, in some cases, even isogonic, depending on the genetic group, sex, feeding methods, slaughter weight and the type of cut, body component or tissue analyzed.
With all the handheld GPSes, iStuff, and other gadgets, when did you last measure the distance between two points on a paper chart, measure your true course against the longitude and search for the nearest isogonic line to east-is-least your magnetic course?
The book began as an academic dissertation, and the author's principal interest lies in such maritime arcana as isogonic charts of compass variation and such ship-shape topics as nautical pennants.
Halley invented isogonic charts and was the first to systematically study the Earth's magnetic field and its variation.
Edmond Halley introduced the isogonic lines or magnetic meridians in the southern hemisphere and Louis Duperrey situated the magnetic South Pole at 76[degrees]S and 135/6[degrees]E.