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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.
1825-35; < Greek kýklōsis an encircling. See cycl-, -osis
Related forms
pseudocyclosis, noun, plural pseudocycloses. Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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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
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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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Encyclopedia Article for cyclosis

the movement of the fluid substance (cytoplasm) within a plant or animal cell. The motion transports nutrients, proteins, and organelles within cells. First discovered in the 1830s, the presence of cytoplasmic streaming helped convince biologists that cells were the fundamental units of life.

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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