/ Dictionary / Index B Brython: Meaning and Definition of Find definitions for: Bryth•on Pronunciation: (brith'un, -on), [key] — n. a member of the Brythonic-speaking Celts. a Briton. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. bryozoan Brythonic Related Content Daily Word Quiz: secular Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language