Database Titles beginning with O
| Oceanic Abstracts | Summarizes articles about the marine and brackish-water environment. Focuses on marine biology and physical oceanography, fisheries, aquaculture, non-living resources, meteorology and geology, plus environmental, technological, and legislative topics. |
| Opera del Vocabolario Italiano | Contains 1,369 vernacular verse and prose texts dated prior to 1375 from early masters of Italian literature, as well as lesser known and obscure texts by poets, merchants, and medieval chroniclers. |
| Optics InfoBase | Covers optics research. Searches 13 scholarly journals published by the Optical Society of America. |
| Organic Syntheses | Covers preparation of important organic molecules and the illustration of novel synthetic methods. Contains all of the nine Collective as well as Annual Volumes and Indices. |
| Ovid Nursing Collection II: Lippincott Premier Nursing Journals | Ovid Nursing Collection II is part of the Journals@OVID Full Text collection. |
| Oxford Art Online | Over 45,000 articles on every aspect of the visual arts (painting, sculpture, graphic arts, architecture, decorative arts and photography) from prehistory to the present. |
| Oxford Dictionary of National Biography | Illustrated collection of 50,000 biographies of the men and women who shaped the history of the British Isles, from the fourth century B.C. to the present. |
| Oxford English Dictionary | The Oxford English Dictionary is the accepted authority on the English language and contains entries for over half a million words. |