| EP | ephedras: in some classifications included in the Gnetaceae |
|---|---|
| EP | white odorless powdered or crystalline alkaloid from plants of the genus Ephedra (especially Ephedra sinica) or made synthetically |
| EP | something transitory |
| EP | enduring a very short time |
| EP | the property of lasting for a very short time |
| EP | the property of lasting for a very short time |
| EP | short-lived insect |
| EP | mayflies |
| EP | mayflies |
| EP | an annual publication containing tables that give the positions of the celestial bodies throughout the year |
| EP | (astronomy) a measure of time defined by Earth's orbital motion |
| EP | mayflies |