The American Heritage - Dictionary of the English Language

The American Heritage® Dictionary of the English Language is available at its fourth diction. Dictionary is an alphabetical list of words that tells you what each word means, how to say the word, and where the word comes from. it is not just a dictionary but you will get almanacs calendars census info compass rose conversions daylight savings time dictionaries encyclopedias flags historical maps leap year libraries metric system postal info reference seasons temperature thesaurus time zones u.s. map world map and more from this site.
The American Heritage - Dictionary of the English Language for reference, encyclopedia.