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[sahy-kloh-sis] /saɪˈkloʊ sɪs/
noun, plural cycloses
[sahy-kloh-seez] /saɪˈkloʊ siz/ (Show IPA).
the movement of protoplasm within a cell.
Origin of cyclosis
First recorded in 1825-35, cyclosis is from the Greek word kýklōsis an encircling. See cycl-, -osis
Related forms
pseudocyclosis, noun, plural pseudocycloses. Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
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British Dictionary definitions for cyclosis


noun (pl) -ses (-siːz)
(biology) the circulation of cytoplasm or cell organelles, such as food vacuoles in some protozoans
Word Origin
C19: from Greek kuklōsis an encircling, from kukloun to surround, from kuklos circle
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
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cyclosis in Medicine

cyclosis cy·clo·sis (sī-klō'sĭs)
n. pl. cy·clo·ses (-sēz)
The streaming rotary motion of protoplasm within certain cells and one-celled organisms.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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