Click here to get started today!
1911 Encyclopedia Britannica
AGONIC LINES (from Gr. a-, privative, and ywvia, an angle), the term given to the imaginary lines on the earth's surface connecting points at which the magnetic needle points to the geographical north and south. (See MAGNETISM, TERRESTRIAL.)
These files are public domain.
Chisholm, Hugh, General Editor. Entry for 'Agonic Lines'. 1911 Encyclopedia Britanica. https://www.studylight.org/encyclopedias/eng/bri/a/agonic-lines.html. 1910.