/ Dictionary / Index P Ptolemaist: Meaning and Definition of Find definitions for: Ptol•e•ma•ist Pronunciation: (tol"u-mā'ist), [key] — n. an adherent or advocate of the Ptolemaic system of astronomy. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Ptolemaic system Ptolemy Related Content Daily Word Quiz: careening Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language