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tri·cyc·lic (tri-sikґlik) (-siґklik) containing three fused rings or closed chains in the molecular structure; see also under antidepressant.Medical dictionary. 2011.
tricyclic — [trī sī′klik, trīsik′lik] adj. containing three fused rings of atoms in the molecule n. any of a major group of antidepressant drugs that have a tricyclic molecular structure … English World dictionary
tricyclic — noun an antidepressant drug that acts by blocking the reuptake of norepinephrine and serotonin and thus making more of those substances available to act on receptors in the brain • Syn: ↑tricyclic antidepressant, ↑tricyclic antidepressant drug •… … Useful english dictionary
tricyclic — adjective Etymology: tri + cyclic Date: 1891 being a chemical with three usually fused rings in the molecular structure and especially a tricyclic antidepressant … New Collegiate Dictionary
tricyclic — /truy suy klik, sik lik/, adj. 1. pertaining to or embodying three cycles. n. 2. Also called tricyclic antidepressant. Pharm. any of a group of pharmacologically active substances, as imipramine, that share a common three ring structure, used to… … Universalium
tricyclic — /traɪˈsaɪklɪk/ (say truy suyklik) adjective 1. relating to or embodying three cycles. –noun 2. → tricyclic antidepressant …
Tricyclic antidepressant — Tricyclic antidepressants (abbreviation TCAs) are a class of antidepressant drugs first used in the 1950s. They are named after the drugs molecular structure, which contains three rings of atoms (compare tetracyclic antidepressant). Example… … Wikipedia
Tricyclic antidepressant — One of a class of medications used to treat depression. The tricyclic antidepressants are also used for some forms of anxiety, fibromyalgia, and the control of chronic pain. Tricyclic refers to the presence of three rings in the chemical… … Medical dictionary
tricyclic antidepressant — noun an antidepressant drug that acts by blocking the reuptake of norepinephrine and serotonin and thus making more of those substances available to act on receptors in the brain • Syn: ↑tricyclic, ↑tricyclic antidepressant drug • Hypernyms:… … Useful english dictionary
tricyclic antidepressant drug — noun an antidepressant drug that acts by blocking the reuptake of norepinephrine and serotonin and thus making more of those substances available to act on receptors in the brain • Syn: ↑tricyclic, ↑tricyclic antidepressant • Hypernyms:… … Useful english dictionary
tricyclic antidepressant — noun Date: 1966 any of a group of antidepressant drugs (as imipramine and amitriptyline) that contain three fused benzene rings, potentiate the action of catecholamines (as norepinephrine and serotonin) by inhibiting their uptake by nerve endings … New Collegiate Dictionary
