Each dictionary includes over 2,200 of the most difficult words and terms found in The Big Book.Providing text related definitions, simple phonic pronunciation guides, and page number references for the included words. Many study and reference notes. Custom sized to fit in the back of your books. Includes many program 'topical' words. Designed for elementary to advanced education levels. In most cases the first definition provided can be used as a simplified substitute for the word in question while maintaining proper sentence structure and intent.