单词 | tricyclic |
释义 | tricyclic[ trahy-sahy-klik, -sik-lik ] / traɪˈsaɪ klɪk, -ˈsɪk lɪk / adjectivepertaining to or embodying three cycles. nounAlso called tricyclic antidepressant. Pharmacology. any of a group of pharmacologically active substances, as imipramine, that share a common three-ring structure, used to treat depression and cocaine abuse. Origin of tricyclicFirst recorded in 1890–95; tri- + cyclic Words nearby tricyclictricuspid orifice, tricuspid stenosis, tricuspid valve, tricyanic acid, tricycle, tricyclic, tricyclic antidepressant, trid., Tridacna, tridactyl, tridarn cupboard Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 British Dictionary definitions for tricyclictricyclic / (traɪˈsaɪklɪk) / adjective(of a chemical compound) containing three rings in the molecular structure nounan antidepressant drug having a tricyclic molecular structure Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012 Scientific definitions for tricyclictricyclic [ trī-sī′klĭk, -sĭk′lĭk ] Relating to a chemical compound having three closed rings. Anthracene is a tricyclic hydrocarbon. Relating to a class of drugs used to treat depression and having a tricyclic chemical structure consisting of two benzene rings fused to opposite sides of a seven-member ring. The seven-member ring consists of six carbon atoms and one nitrogen atom. Tricyclic antidepressants enhance the activity of monoamine neurotransmitters in the brain by inhibiting their reuptake by the cells that secrete them. Composed of or arranged in three distinct whorls, as the petals of a flower. The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved. |
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