Grey literature databases identify resources that are key to research and scholarship. Many are open resources that go through a quality control process before they are published. Definitions are scholarly dictionaries, encyclopedias and handbooks that help define terms and provide additional context. There are many healthcare, nursing and applied handbooks, texts, and reference resources of specific interest found using Omni. A select list of general resources includes,
Mosby's Pocket Dictionary of Medicine, Nursing and Health Professions by 
