[ sahy-tuh-plaz-uh m ]
/ ˈsaɪ təˌplæz əm /

noun Cell Biology.

the cell substance between the cell membrane and the nucleus, containing the cytosol, organelles, cytoskeleton, and various particles.

Nearby words

  1. cytophilic,
  2. cytophilic antibody,
  3. cytophotometer,
  4. cytophotometry,
  5. cytophylaxis,
  6. cytoplasmic bridge,
  7. cytoplasmic inclusion body,
  8. cytoplasmic inheritance,
  9. cytoplast,
  10. cytoreductive therapy

Origin of cytoplasm

First recorded in 1870–75; cyto- + -plasm

Related formscy·to·plas·mic, adjectivecy·to·plas·mi·cal·ly, adverb Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for cytoplasm

British Dictionary definitions for cytoplasm


/ (ˈsaɪtəʊˌplæzəm) /


the protoplasm of a cell contained within the cell membrane but excluding the nucleus: contains organelles, vesicles, and other inclusions
Derived Formscytoplasmic, adjective

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 cytoplasm



1874, from cyto- + -plasm.

Online Etymology Dictionary, © 2010 Douglas Harper

Medicine definitions for cytoplasm


[ sītə-plăz′əm ]


The protoplasm outside a cell nucleus.
Related formscy′to•plasmic (-plăzmĭk) adj.

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

Science definitions for cytoplasm


[ sītə-plăz′əm ]

The jellylike material that makes up much of a cell inside the cell membrane, and, in eukaryotic cells, surrounds the nucleus. The organelles of eukaryotic cells, such as mitochondria, the endoplasmic reticulum, and (in green plants) chloroplasts, are contained in the cytoplasm. The cytoplasm and the nucleus make up the cell's protoplasm. See more at cell.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

Culture definitions for cytoplasm


[ (seye-tuh-plaz-uhm) ]

The material within a biological cell that is not contained in the nucleus or other organelles.

The New Dictionary of Cultural Literacy, Third Edition Copyright © 2005 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.