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 (bī-sĭk′lĭk, -sī′klĭk)
1. Consisting of or having two cycles.
2. Botany Composed of or arranged in two distinct whorls, as the petals of a flower.
3. Chemistry Relating to or being a molecule containing two rings, either by a fused or bridged arrangement.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.


(baɪˈsaɪklɪk; -ˈsɪklɪk) or


1. of, forming, or formed by two circles, cycles, etc
2. (Botany) (of stamens, petals, etc) arranged in two whorls
3. (Chemistry) (of a chemical compound) having atoms arranged in two rings fused together with at least two atoms common to each ring: naphthalene is bicyclic.
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(baɪˈsaɪ klɪk, -ˈsɪk lɪk)

1. Also, bi•cy′cli•cal. consisting of or having two cycles or circles.
2. containing two rings of atoms in a molecule.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Adj.1.bicyclic - having molecules consisting of two fused rings
cyclic - of a compound having atoms arranged in a ring structure
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
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References in periodicals archive ?
In this light, leading biotechnology entity Bicycle Therapeutics, best known for its flagship bicyclic peptide discovery has recently affirmed its extended collaboration with AstraZeneca to innovate new peptide targets for cardiovascular as well as metabolic disorders.
Antidepressant biochemical profile of the novel bicyclic compound Wy-45,030, an ethyl cyclohexanol derivative.
Bicycle Therapeutics is developing a unique class of chemically synthesized medicines based on its proprietary bicyclic peptide (Bicycle) product platform to address therapeutic needs unreachable with existing treatment modalities.
The potency and efficacy of bicyclic peptide inhibitors of PKal, such as THR-149, have been demonstrated in preclinical studies.
Jorgensen, Discovery and crystallography of bicyclic arylaminoazines as potent inhibitors of HIV-1 reverse transcriptase, Bioorg.
The bicyclic skeletal vibration absorption peak appeared at 576 [cm.sup.-1] and the bending vibration absorption peak was at 455 [cm.sup.-1].
Li, "Complete characterization of bicyclic graphs with minimal Kirchhoff index," Discrete Applied Mathematics, vol.
Liu, "Sharp Bounds of the Hyper-Zagreb Index on Acyclic, Unicylic, and Bicyclic Graphs," Discrete Dynamics in Nature and Society, vol.
Pinnau, "Synthesis and characterization of a microporous 6FDA-polyimide made from a novel carbocyclic pseudo Troger's base diamine: effect of bicyclic bridge on gas transport properties," Polymer, vol.
Irradiation of their acetonitrile solutions with UV light of 365 nm results in thermally reversible transformation into the ring-closed bicyclic diaziridine isomers 1-4 C.
Bicyclic lactones having a gem-dimethylcyclopropane system have also been obtained as products of cyclization of [gamma], [delta]-epoxyamide in the presence of lithium diisopropylamide [36] or 1,3-cyclization of [beta]-chloroisopropyl-[gamma]-lactones with potassium tert-butoxide [37, 38].
The aromatic bicyclic indole--made of benzene fused to a pyrrole ring--is abundantly present in nature as a metabolic derivative and as an indolyl moiety present in biological molecules utilized by plants, animals, and microbes.