/ Dictionary / Index P partition line: Meaning and Definition of Find definitions for: parti'tion line" Pronunciation: [key] — Heraldry. Heraldry. a plain or figured edge between two adjacent areas of an escutcheon, between an ordinary and the field of an escutcheon, or between two adjacent ordinaries. Also called Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. partition partitive Related Content Daily Word Quiz: fervor Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language