/ Dictionary / Index C convergent boundary: Meaning and Definition of Find definitions for: conver'gent bound'ary Pronunciation: [key] — Geol. Geol. a major geologic discontinuity or suture marking the juncture of lithospheric plates that have been joined by plate tectonics. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. convergent convergent evolution Related Content Daily Word Quiz: illegible Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language