Reference

Dictionaries

• Acronyms - Acronym look-up tool.
• Acronyms-GOOGLE - More General Acronyms & Abbreviations. (What's an R37 grant?).
• American Heritage Dictionary - The American Heritage Dictionary 2000.
• Merriam-Webster Dictionary - Merriam-Webster Collegiate® Dictionary
• OneLook Dictionaries - 6,025,862 words in 957 dictionaries indexed - Oct 2003.

Encyclopedias

• Encyclopedia.Com - "The Internet's premiere free encyclopedia"
• Wikipedia - "The free encyclopedia that anyone can edit."

General Reference

• Bartletts - A collection of passages, prases and proverbs traced to their sources in ancient and modern literature.
• Beaucoup - Search engines for everything.
• Information Please - Information Please Almanac.
• RefDesk - Bob Drudge's outstanding organization of the Internet; Colin Powell's choice for best reference site on the Internet.
• Roget's Thesaurus - Standard reference text for synonyms.

Medline

• PubMed Rapid and reliable interface.