| agonic line n. An imaginary line on the earth's surface connecting points where the magnetic declination is zero. |
agonic line ( -g n  k) An imaginary line on the Earth's surface connecting points where the magnetic declination is zero. The agonic line is a line of longitude on which a compass will show true north, since where magnetic declination is zero, magnetic north coincides with geographic north. |
A line drawn on a map or chart joining points of zero magnetic declination for a specified year date. See also magnetic declination.
ThesaurusLegend: Synonyms Related Words Antonyms
| Noun | 1. | agonic line - an imaginary line connecting points on the Earth's surface where the magnetic declination is zero line - a spatial location defined by a real or imaginary unidimensional extent |
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