/ Dictionary / Index P progressionist: Meaning and Definition of Find definitions for: pro•gres•sion•ist Pronunciation: (pru-gresh'u-nist), [key] — n. a person who believes in progress, as of humankind or society. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. progression progressist 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