- epicAn extended narrative poem in elevated or dignified language, celebrating the feats of a deity, demigod (heroic epic), other legend or traditional hero.
- epicentreThe point on the land or water surface directly above the focus, or hypocentre, of an earthquake.
- epizooticAn occurrence of a disease or disorder in a population of non-human animals at a frequency higher than that expected in a given time period.
- ephidrosisMorbid or excessive secretion of sweat; hyperhidrosis.
- epicanthicThat partially covers the inner angle of the eye.
- epichorialIn or of the country; rural.
- epigyneThe external female sex organ in arachnids.
- epithecaThe upper half of the theca of a thecate protist such as a diatom or dinoflagellate.
- eponychiumThe thickened layer of skin adjoining fingernails and toenails, particularly at the base of the nail.