Newly Revised & Updated! Written especially for students grades 9-11, ages 14 & up. Features more than 100,000 definitions and 28,000 usage examples. Includes 150 newly added words and meanings across a variety of fields including technology, entertainment, health, science and society. Over 500 synonym paragraphs, 200 word history paragraphs that clarify meaning, and nearly 1,000 illustrations. A great study aid for students building vocabulary and preparing for college level reading.