/ Dictionary / Index P posttranslational: Meaning and Definition of Find definitions for: post•trans•la•tion•al Pronunciation: (pōst"trans-lā'shu-nl, -tranz-), [key] — n. occurring after the synthesis of a polypeptide chain. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. posttranscriptional posttraumatic Related Content Daily Word Quiz: cygnet Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language