The National Institutes of Health is one of many places to find an accurate, reliable online medical dictionary. It allows users to look up any medical term and can even find terms when the user is unsure of the proper spelling.
The NIH website lets users type in one word at a time. Once the "Submit" button is clicked, it takes users to the definition of the word and lists different ways in which the word can be used. It offers help with pronunciation and clarifies the word's part of speech.
The NIH medical dictionary is powered by Merriam Webster Dictionary and provides accurate definitions and other information about medical terms.