It features all the qualities that have distinguished the American Heritage® name for decades: a clear and accessible defining style, expert usage advice, and more than 2,500 photographs and drawings that enhance the definitions and invite browsing. The Periodic Table of the Elements includes the newest element, roentgenium. Biographical entries are fully up-to-date, and geographical entries reflect the latest geopolitical changes.

"Based on the fourth ed. of the American Heritage dictionary"- -t.p. verso