catecholamine

cat·e·cho·la·mine   (kāt'ĭ-kō'lə-mēn', -kô'-)    n.  Any of a group of amines derived from catechol that have important physiological effects as neurotransmitters and hormones and include epinephrine, norepinephrine, and dopamine.

Main Entry: cat·e·chol·amine
Pronunciation: "kat-&-'kO-l&-"mEn, -'ko-
Function: noun
: any of various amines (as epinephrine,norepinephrine, and dopamine) that contain a dihydroxy benzene ring, that are derived from tyrosine, and that function as hormones or neurotransmitters or both

catecholamine cat·e·cho·la·mine (kāt'ĭ-kō'lə-mēn', -kô'-)
n.
Any of a group of amines composed of a pyrocatechol molecule and the aliphatic portion of an amine that have important physiological effects as neurotransmitters and hormones, such as epinephrine, norepinephrine, and L-dopa.

catecholamine   (kāt'ĭ-kō'lə-mēn', -kô'-)  Pronunciation Key  Any of a group of amines derived from catechol that have important physiological effects as neurotransmitters and hormones and include epinephrine, norepinephrine, and dopamine.