• synonyms


[mon-uh-sahy-klik, -sik-lik]
  1. having one cycle.
  2. Botany. arranged in a single whorl, as the parts of certain flowers.
  3. Chemistry. of or relating to a molecular structure containing one ring.
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Origin of monocyclic

First recorded in 1880–85; mono- + cyclic
Related formsmon·o·cy·cly, noun
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

British Dictionary definitions for monocyclic


  1. Also: mononuclear (of a chemical compound) containing only one ring of atoms
  2. (of sepals, petals, or stamens) arranged in a single whorl
  3. (of a plant) having a life cycle that is completed in one year
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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

monocyclic in Science


[mŏn′ə-sīklĭk, -sĭklĭk]
  1. Having a single cycle, as of activity or development.
  2. Having a single whorl, as certain flowers and the shells of certain invertebrates.
  3. Having a molecular structure with only one ring. Benzene and toluene are monocyclic molecules.
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The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.