epinephrin epinephelus fulvus • epinephrine · · · Info · Definitions · Synonyms · Characters · · epinephrin · · Text Latin · · Script 10 · · Length 4 · · Syllables Definitions · · · (noun) a catecholamine secreted by the adrenal medulla in response to stress (trade name Adrenalin); stimulates autonomic nerve action. Synonyms: epinephrine, adrenaline, Adrenalin. · · Noun Definition 1 Synonyms · · · epinephrine · · Synonym 1 adrenaline · · Synonym 2 adrenalin · · Synonym 3 Characters · · e latin small letter e U+0065 h latin small letter h U+0068 i latin small letter i U+0069 n latin small letter n U+006E p latin small letter p U+0070 r latin small letter r U+0072