Almanacs | Dictionaries

The Old Farmer's Almanac 
Like the print version, the online version includes information about astronomical events, weather conditions and forecasts, recipes, and gardening tips. 

Merriam-Webster Dictionary
The world's premier dictionary online. 
 
dictionary.com
A general English-language dictionary online. Its simple search form hides a sophisticated multi-source search of Webster’s Revised Unabridged Dictionary, WordNet, The Free Online Dictionary of Computing, Jargon File, The Elements, Easton’s 1897 Bible Dictionary, Hitchcock’s Bible Names Dictionary, U.S. Gazetteer, and the CIA World Factbook.

OneLook Dictionaries
This dictionary allows you to look up a word in 350 different dictionaries simultaneously, or pick specific dictionaries from grouping or subject-specific ones, including science, Internet, computer and technology.