Adrenalin adrenalectomy • adrenaline · · · Info · Definitions · Synonyms · Characters · · Adrenalin · · Text Latin · · Script 9 · · Length Definitions · · · (noun) a catecholamine secreted by the adrenal medulla in response to stress (trade name Adrenalin); stimulates autonomic nerve action. Synonyms: epinephrine, epinephrin, adrenaline. · · Noun Definition 1 Synonyms · · · epinephrine · · Synonym 1 epinephrin · · Synonym 2 adrenaline · · Synonym 3 Characters · · A latin capital letter a U+0041 a latin small letter a U+0061 d latin small letter d U+0064 e latin small letter e U+0065 i latin small letter i U+0069 l latin small letter l U+006C n latin small letter n U+006E r latin small letter r U+0072