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tricyclic Definition

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tricyclic
adjective(tri-cy-clic)
being a chemical with three usually fused rings in the molecular structure and especially a tricyclic antidepressant
tricyclic
noun(tri-cy-clic)
tricyclic antidepressant
tricyclic
noun(tri-cy-clic)
any of a group of antidepressant drugs (such as imipramine and amitriptyline) that contain three fused benzene rings, potentiate the action of catecholamines (such as norepinephrine and serotonin) by inhibiting their uptake by nerve endings, and do not inhibit the action of monoamine oxidase —called also tricyclic

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