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or cycl-
1. Circle; cycle: cyclorama.
2. A cyclic compound: cyclohexane.

[Greek kuklo-, from kuklos, circle; see kwel- in Indo-European roots.]
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.


or before a vowel


combining form
1. indicating a circle or ring: cyclotron.
2. (Chemistry) denoting a cyclic compound: cyclohexane.
[from Greek kuklos cycle]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014


(ˈsi kloʊ, saɪ-)

n., pl. -clos.
a three-wheeled pedaled or motorized taxi in SE Asia.
[1960–65; < French cyclo(-pousse)=cyclo-, comb. form representing cycle cycle + pousse, appar. short for pousse-pousse jinrikisha (reduplication of pousse, n. derivative of pousser to push)]


a combining form meaning “circle” (cyclometer; cyclotron); “cycle” (cyclothymia); “(of a chemical compound) structured in closed chains” (cyclohexane); “cyclone” (cyclogenesis).
[< Greek kyklo-, comb. form of kýklos circle, ring; c. Skt cakra wheel]
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
References in periodicals archive ?
HOLMFIRTH cycle rider Amira Mellor has decided to dedicate her future to Cyclo- Cross.
KENILWORTH'S Steven Proud, the rider, was on the podium again at the West Midlands Cyclo- Cross League after finishing a well-earned third in the junior category in the mud at Rosliston Forestry Centre.
Also riding will be MI veteran Andy Shaw who chalked up the race team's 100th win of the season at Plymouth at the weekend when he won a cyclo- cross event.