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diametrical

or diametric

[dahy-uh-me-tri-kuh l or dahy-uh-me-trik] /ˌdaɪ əˈmɛ trɪ kəl or ˌdaɪ əˈmɛ trɪk/
adjective
1.
of, relating to, or along a diameter.
2.
in direct opposition; being at opposite extremes; complete:
diametrical opposites; a diametrical difference.
Origin of diametrical
1545-1555
1545-55; < Greek diametrik(ós) (diámetr(os) diameter + -ikos -ic) + -al1
Related forms
diametrically, adverb
undiametric, adjective
undiametrical, adjective
undiametrically, adverb
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
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British Dictionary definitions for diametric

diametric

/ˌdaɪəˈmɛtrɪk/
adjective
1.
Also diametral. of, related to, or along a diameter
2.
completely opposed
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
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Word Origin and History for diametric
adj.

1802, probably shortened from diametrical (1550s); see diameter + -ical.

Online Etymology Dictionary, © 2010 Douglas Harper
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14
16
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