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or diametric

[dahy-uh-me-tri-kuh l or dahy-uh-me-trik] /ˌdaɪ əˈmɛ trɪ kəl or ˌdaɪ əˈmɛ trɪk/
of, relating to, or along a diameter.
in direct opposition; being at opposite extremes; complete:
diametrical opposites; a diametrical difference.
Origin of diametrical
1545-55; < Greek diametrik(ós) (diámetr(os) diameter + -ikos -ic) + -al1
Related forms
diametrically, adverb
undiametric, adjective
undiametrical, adjective
undiametrically, adverb Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
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Examples from the Web for diametrically
Contemporary Examples
Historical Examples
  • For a lady to win a lover to her way of thinking is easy, even though her way be diametrically opposed to his.

  • But they do not agree together; some of them are diametrically opposed to others.

    Loss and Gain John Henry Newman
  • Each man bears within himself these two diametrically opposite characteristics.

    Schopenhauer Margrieta Beer
  • Generally, with respect to crossing, the effects may be diametrically opposite.

  • Of course, so far as I am concerned, events have put me in a diametrically different frame of mind.

    The Market-Place Harold Frederic
British Dictionary definitions for diametrically


completely; utterly (esp in the phrase diametrically 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 diametrically

1630s, "completely" (opposed, contrary, etc.); see diametric. Mostly in figurative use; the two points that mark the ends of a line of diameter across a circle are opposite one another.

Online Etymology Dictionary, © 2010 Douglas Harper
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