Dictionaries / Resources
Medical Spanish - Dictionary and Resources
Real Academia Española - This is the true dictionary of the Spanish language, and is completely in Spanish. Click on the "conjugar" button next to the word to see verb conjugations. This site also includes other good categories, such as "Consultas lingüísticas."
WordReference.com - Large dictionary that also includes categories such as synonyms and antonyms, conjugations, and a monolingual Spanish dictionary.
Verbix - Extensive verb conjugator.