diametrical

[dahy-uh-me-tri-kuhl]
adjective
1.
of, pertaining to, or along a diameter.
2.
in direct opposition; being at opposite extremes; complete: diametrical opposites; a diametrical difference.
Also, diametric.


Origin:
1545–55; < Greek diametrik(ós) (diámetr(os) diameter + -ikos -ic) + -al1

diametrically, adverb
undiametric, adjective
undiametrical, adjective
undiametrically, adverb
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World English Dictionary
diametric or diametrical (ˌdaɪəˈmɛtrɪk)
 
adj
1.  Also: diametral of, related to, or along a diameter
2.  completely opposed
 
diametrical or diametrical
 
adj

Collins English Dictionary - Complete & Unabridged 10th Edition
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Etymonline
Word Origin & History

diametric
1868, from Gk. diametrikos, from diametros (see diameter). Related: Diametrical.
Online Etymology Dictionary, © 2010 Douglas Harper
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Example sentences
There simply are no grounds for debate, beyond diametric opposition.
The orifice setting and the diametric clearance between the piston and cylinder control the rate of air transfer.
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