the GNU version of the Collaborative International Dictionary of English
adj. Of or pertaining to a diameter.
adj. As remote as possible, as if at the opposite end of a diameter; directly adverse.
The Century Dictionary and Cyclopedia
Same as diametrical.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
adj. related to or along a diameter
adj. characterized by opposite extremes; completely opposed
Word Usage
"This message sits in diametric opposition to some who have been warning that Wahhabists and other foreign radicals are infiltrating American prisons for recruitment into international terrorist rings."