Starting in 1996, Alexa Internet has been donating their crawl data to the Internet Archive. Flowing in every day, these data are added to the Wayback Machine after an embargo period.
Over 90,000 entries feature 10,000 new words and senses, 70,000 audio word pronunciations, 900 full-page color illustrations, language notes and word-root appendixes.
Containing 35,000 synonyms in an easy-to-use format, this thesaurus features succinct word definitions and an innovative hyperlinked category index by the editors of the American Heritage® Dictionary.
With a detailed look at grammar, style, diction, word formation, gender, social groups and scientific forms, this valuable reference work is ideal for students, writers, academicians and anybody concerned about proper writing style.