Manufacturer: HOUGHTON MIFFLIN COMPANY

Fourth Edition. 400,000 entries with 10,000 new words and tenses. Full-color with 4,000 photographs and illustrations. Updated guidance on usage from the renowned Usage Panel, and new notes on regionalisms and language variation and change. Thousands of updated etymologies, a fully revised Appendix of Indo-European Roots, and a new Appendix of Semitic Roots. Thumb-Indexed.