white space: Meaning and Definition of

white' space"

Pronunciation: [key]
  1. the unprinted area of a piece of printing, as of a poster or newspaper page, or of a portion of a piece of printing, as of an advertisement; blank space: White space is as effective in a layout as type.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.