| EP | an acute infectious disease occurring in epidemic form and featuring paroxysms of pain (usually in the chest) |
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| EP | an acute contagious viral disease characterized by fever and by swelling of the parotid glands |
| EP | an acute infectious disease occurring in epidemic form and featuring paroxysms of pain (usually in the chest) |
| EP | a contagious viral disease that is a milder form of measles lasting three or four days |
| EP | of or relating to epidemiology |
| EP | of or relating to epidemiology |
| EP | a medical scientist who studies the transmission and control of epidemic diseases |
| EP | the branch of medical science dealing with the transmission and control of disease |
| EP | any of various orchids of the genus Epidendrum |
| EP | large and variable genus of terrestrial or epiphytic or lithophytic orchids of tropical and subtropical Americas |
| EP | orchid of Florida and the Bahamas having showy brightly colored flowers |
| EP | Mexican epiphytic orchid having pale green or yellow-green flowers with white purple-veined lip |