/ Dictionary / Index O oblique triangle: Meaning and Definition of Find definitions for: oblique' tri'angle Pronunciation: [key] any triangle that does not have a right angle (contrasted with right triangle). Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. oblique section obliquity Related Content Daily Word Quiz: acquiesce Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language