Revised edition dictionary is written especially for students in grades 9 to 11, ages 14 to 17. Updated to reflect groundbreaking Merriam-Webster's Collegiate Dictionary, Eleventh Edition. School dictionary includes more than 100,000 entries and nearly 1,000 illustrations. School dictionary also offers abundant word history paragraphs, synonym paragraphs, and example sentences. Dictionary has a laminated hardcover and contains 1,280 pages.