/ Dictionary / Index P Pascal's theorem: Meaning and Definition of Find definitions for: Pascal's' the'orem Pronunciation: [key] — Geom. Geom. the theorem that the lines joining adjacent vertices of a hexagon intersect the same straight line if alternate vertices lie on two intersecting straight lines. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Pascal's limaçon Pascal's triangle Related Content Daily Word Quiz: fabricate Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language