Two important reference books are combined in one volume covering the core vocabulary students in grades 3-6 need. This is an ideal tool for homeschooling, classroom use, or general study. Features clear and concise definitions for more than 20,000 words 50,000 synonyms and antonyms help expand a student's vocabulary Created in cooperation with the editors of Merriam-Webster, America's leading provider of language information. BOOK COVER DESIGNS MAY VARY: We recently redesigned the cover of Webster's Dictionary & Thesaurus, but the interior content of the book is the same whether you get the original cover design or the new cover design.