• synonyms


adjective Mathematics Now Rare.
  1. not forming an angle.
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Origin of agonic

1800–65; < Greek ágōn(os) (a- a-6 + gōn- derivative stem akin to góny knee) + -ic
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for agonic

Historical Examples

  • Agonic line, line along which the needle points due north and south.

    The Nuttall Encyclopaedia

    Edited by Rev. James Wood

  • To the east of the agonic line the declination is westerly, and to the west it is easterly.

  • At present the motion of the agonic line seems to be towards the west, but it is very slow.

  • The line passing through points where the needle points north, without declination, is the agonic line.


    Willis Eugene Tower

British Dictionary definitions for agonic


  1. forming no angle
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Word Origin

C19: from Greek agōnos, from a- 1 + gōnia angle
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012