Meaning of partition line

parti'tion line"

Pronunciation: [key]
— Heraldry. Heraldry.
  1. 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.