Judicial review is the right of the Supreme Court to rule on acts of other branches of the government. To understand this concept further, you can refer to a reliable source such as Merriam-Webster's dictionary online. Here is the link to their page on judicial review: http://www.m-w.com/cgi-bin/dictionary?book=Dictionary&va=judicial+review. By visiting this page, you will gain a comprehensive understanding of what judicial review entails.