cyclo-

a combining form meaning “cycle,” used in the formation of compound words: cyclohexane.

Also especially before a vowel, cycl-.

Origin of cyclo-

< Greek kyklo-, combining form of kýklos circle, ring; cognate with Sanskrit cakra, wheel

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for cyclo-

cyclo-

before a vowel cycl-

combining form

indicating a circle or ringcyclotron

denoting a cyclic compoundcyclohexane

Word Origin for cyclo-

from Greek kuklos cycle

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

Word Origin and History for cyclo-

before a vowel, cycl-, word-forming element meaning "circle, ring, rotation," from Latinized form of Greek kyklo-, comb. form of kyklos "circle, wheel, ring" (see cycle (n.)).

Medicine definitions for cyclo-

cyclo-

pref.

Circle; cycle:cyclophoria.

A cyclic compound:cyclopeptide.