The sources below are useful for getting started on the research process. Many more electronic and print sources are available at Copley Library. Links provided are for online reference sources.
A digital library containing high-quality reference books from the world's leading publishers. Offers access to millions of entries and contains all types of reference books including dictionaries and encyclopedias, covering science to Shakespeare.
The Oxford English Dictionary (OED) is widely regarded as the accepted authority on the English language. It is an unsurpassed guide to the meaning, history, and pronunciation of 600,000 words— past and present—from across the English-speaking world.