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 (kăt′ĭ-kō′lə-mēn′, -kô′-)
Any of a group of monoamines, including epinephrine, norepinephrine, and dopamine, that act as neurotransmitters and hormones.


(Biochemistry) any of a group of hormones that are catechol derivatives, esp adrenaline and noradrenaline
[C20: from catechu + -ol1 + amine]


(ˌkæt ɪˈkɒl əˌmin, -ˈkoʊ lə-)

any of a group of chemically related neurotransmitters, as epinephrine and dopamine,with similar effects on the sympathetic nervous system.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.catecholamine - any of a group of chemicals including epinephrine and norepinephrine that are produced in the medulla of the adrenal gland
endocrine, hormone, internal secretion - the secretion of an endocrine gland that is transmitted by the blood to the tissue on which it has a specific effect
noradrenaline, norepinephrine - a catecholamine precursor of epinephrine that is secreted by the adrenal medulla and also released at synapses
Adrenalin, adrenaline, epinephrin, epinephrine - a catecholamine secreted by the adrenal medulla in response to stress (trade name Adrenalin); stimulates autonomic nerve action
References in periodicals archive ?
David Davies of Binghamton University said that their hypothesis fitted with the observation that heart attack and stroke often occur following an event where elevated levels of catecholamine hormones are released into the blood and tissues, such as occurs during sudden emotional shock, stress or over-exertion.
Adipocyte lipolysis is physiologically stimulated by catecholamine hormones.
The patients had blood concentrations of catecholamine hormones that were more than seven times normal and two to three times as great as those in five patients having heart attacks triggered by coronary artery blockages.