This refers to the amount of users that leave a webpage other than the landing page. While this may not have the same impact as bounce rate, it is still an important metric to consider when optimizing a website.
Sean Si is a Filipino motivational speaker and a Leadership Speaker in the Philippines. He is the head honcho and editor-in-chief of SEO Hacker. He does SEO Services for companies in the Philippines and Abroad. Connect with him at Facebook, LinkedIn or Twitter. Check out his new project, Aquascape Philippines