Glossary » white space
(graphic design) the use of blank space on a page to help reinforce the structure of the page and avoid cluttered graphical elements. Blank space (not necessarily white), when used conscientiously, can help improve the organization and comprehensibility of a page and provide a more relaxing, open appearance. However, white space can be used badly. In particular, avoid “trapped white space”, blank areas in a layout which are surrounded by other graphics without being able to flow into the margin of the page or screen, or with only narrow outlets.