/ Dictionary / Index P pyramid scheme: Meaning and Definition of Find definitions for: pyr'amid scheme" Pronunciation: [key] pyramid (def. 8). Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. pyramid letter Pyramus and Thisbe 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