- epinephrineA catecholamine hormone and neurotransmitter; as a hormone, secreted by the adrenal gland in response to stress (when it stimulates the autonomic nervous system); as a neurotransmitter, synthesized from norepinephrine. It is also used as a medication.
- epinaosAn open vestibule behind the nave, differentiated from the opisthodomos.
- epineuriumThe connective tissue framework and sheath of a nerve which bind together the nerve bundles, each of which has its own special sheath, or perineurium; The outermost layer of dense irregular connective tissue surrounding a peripheral nerve.
- epizeuxisThe repetition of words in immediate succession for emphasis.