agonic

[ey-gon-ik]

adjective Mathematics Now Rare.

not forming an angle.

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 of agonic

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.
Encyclopaedia Britannica, 11th Edition, Volume 17, Slice 3
Various
At present the motion of the agonic line seems to be towards the west, but it is very slow.
Encyclopaedia Britannica, 11th Edition, Volume 17, Slice 3
Various
The line passing through points where the needle points north, without declination, is the agonic line.
Physics
Willis Eugene Tower

British Dictionary definitions for agonic

agonic

adjective

forming no angle

Word Origin for agonic

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